CN221441570U - Filling type invisible well lid z-shaped clamping column - Google Patents

Abstract

The utility model discloses a filling type invisible well lid z-shaped clamping column, which comprises a roadbed, wherein a support groove is formed in the inner side of the roadbed, a clamping groove is formed in the upper surface of the roadbed, a threaded hole is formed in the bottom of the clamping groove, the clamping column is clamped in the clamping groove, and a fixing hole is formed in the surface of the clamping column. Four z-shaped clamping columns are welded at four corners of a support, bolts are used for connecting threads of the clamping columns to threaded holes of clamping grooves, concrete is used for pouring around the support to form a protection ring, a cover plate cover of welding steel bars is used for installing the cover plate in the support, the z-shaped clamping columns and the support are installed above a filled invisible well cover, acting force can not directly act on the well cover after the cover plate is covered, so that the problem that the acting force damages the well cover is avoided, good anti-theft performance, attractive appearance, practicability and rust resistance are achieved, the protection capability is improved, and the service life of the well cover structure is greatly prolonged.

Description

Filling type invisible well lid z-shaped clamping column

Technical Field

The utility model relates to the technical field of urban construction, in particular to a filling type invisible well lid z-shaped clamping column.

Background

With the advancement of urban construction pace, people pay more and more attention to the quality of urban construction. The sidewalk is not only a special passage for the passage of pedestrians on municipal roads, but also has great influence on the construction of urban landscapes. The pavement is inevitably provided with a large number of inspection wells such as a high-voltage power well, a low-voltage power well, a comprehensive communication well, a traffic working well, an illumination working well and the like, the integrity and the sensibility between the inspection well and the pavement are poor, and the phenomenon that the blind pavement is unsmooth and straight due to the inspection well also occurs frequently. Under the premise of meeting the requirements of safety, practicability and the like of the manhole cover, in order to build good road landscape arrangement, more and more projects adopt a novel manhole cover which is a filled invisible manhole cover, and the novel manhole cover can hide the original manhole cover on a sidewalk into the ground, so that a good landscape effect is integrally built, and therefore the beautiful and safe-to-use perfect unification is achieved.

Although the filled invisible well lid has very good anti-theft property, aesthetic property, practicability and rust resistance to a certain extent, as the well lid has certain difference with a common well lid, no relevant standard can be referred, the phenomena of warping of an outer well lid frame, cracking or layered falling of a paving layer, uneven paving of the well lid and the well Zhou Liaodan, uneven (sunken) surface of the well lid and surrounding ground and the like are found in the filled invisible well lid during engineering return visit, and the service life of the well lid structure is reduced.

Disclosure of utility model

The utility model provides a filling type invisible well lid z-shaped clamping column, which aims to solve the problems in the background technology.

In order to solve the technical problems, the utility model adopts the following technical scheme:

The utility model provides a stealthy well lid "z" card post of filling, includes the road bed, the support groove has been seted up to the inboard of road bed, the draw-in groove has been seted up to the upper surface of road bed, the screw hole has been seted up to the bottom of draw-in groove, the inside joint of draw-in groove has the card post, the fixed orifices has been seted up on the surface of card post, the inner wall grafting of fixed orifices has the bolt, the one end welding of card post has the support, concrete layer has been pour to the upper surface of road bed, the inner wall support of support has the apron.

The technical scheme of the utility model is further improved as follows: four clamping columns are welded at four corners of the bottom of the support, and the bottom of the support is contacted with the support groove after the clamping columns are clamped with the clamping grooves.

By adopting the technical scheme, four clamping columns are connected with the support through welding in the scheme, and the bottom of the support is contacted with the support groove, so that the influence of later construction procedures on loosening, displacement and subsidence of the support can be avoided, the support can form an integral structure, the service life of the support is greatly prolonged, and the supporting capacity is improved.

The technical scheme of the utility model is further improved as follows: the bolts penetrate through the fixing holes and are connected in the threaded holes in a threaded mode to jointly form the clamping column fixing structure.

By adopting the technical scheme, the position deviation can not occur due to construction pouring in order to ensure that the clamping column is clamped in the clamping groove, and the clamping column is connected with the threaded hole through the bolt in a threaded manner, so that the clamping column and the support are fixed, the follow-up construction is realized through a firm structure, and the occurrence of reworking due to the position deviation is avoided.

The technical scheme of the utility model is further improved as follows: the concrete layer is poured by adopting concrete to fill the support groove and the clamping groove, and the pouring height is overlapped with the top of the support to form a protection ring structure.

By adopting the technical scheme, the clamping columns and the supports can be blocked in the concrete by using the concrete to pour the support grooves and the clamping grooves, so that the concrete forms an integral structure, and the periphery of the cover plate can be prevented from sinking after the cover plate is mounted subsequently, thereby prolonging the service life of the cover plate.

The technical scheme of the utility model is further improved as follows: and mixing and stirring concrete poured on the concrete layer by adopting the mass ratio of cement to sand at 1:5, and pouring concrete layers with the spacing of 40 cm around the support.

By adopting the technical scheme, in order to enable the concrete to have higher binding force and water permeability, the concrete quality obtained by mixing and stirring the concrete raw materials in a ratio of 1:5 is higher through testing, so that guarantee is provided for subsequent construction leveling, meanwhile, the strength of the ground around the well cover can be improved by pouring concrete layers with the spacing of 40 cm around the support, and the problem of collapse is avoided when the concrete is used for a long time.

The technical scheme of the utility model is further improved as follows: the bottom of the cover plate is welded with reinforcing steel bars, and the welded reinforcing steel bars are arranged in a crisscross manner to form a supporting reinforcing structure.

By adopting the technical scheme, the bearing of the bearing surface of the cover plate in the scheme has good pressure resistance, and the bottom of the cover plate can be reinforced by adopting the crisscross welded steel bars to strengthen the supporting structure, so that the service life of the cover plate is greatly prolonged.

The technical scheme of the utility model is further improved as follows: the steel bars are welded by adopting welding skills of double-sided fillet welding and full-length welding, and the steel bars with the diameter of 10mm are welded at intervals of 100 mm.

By adopting the technical scheme, the primary reinforcing steel bar with the diameter of 10 mm in the scheme has high strength and reliability, can bear larger load and stress, adopts double-sided fillet welding and full-length full-welding at intervals of 100 mm, can greatly improve the bearing capacity of the welded integral structure, can ensure that the cover surface of the cover plate is not deformed after long-time rolling and treading, and prolongs the service life of the well cover structure.

The technical scheme of the utility model is further improved as follows: the surface of the cover plate is uniformly coated with epoxy resin material, and broken stone is uniformly scattered to form a firm rough surface structure.

By adopting the technical scheme, the epoxy resin in the scheme is a common organic compound and has good chemical resistance and heat resistance. It is a polymer composed of two main components, epoxy resin and curing agent (such as amine or anhydride). When the two components are mixed and applied at the appropriate temperature and time, they react to form a hardened solid material. Epoxy resin is often used as an adhesive because of its excellent adhesive property and corrosion resistance, and can be used for adhering broken stone to the surface of a cover plate and enhancing the pavement of a surface layer and the anti-skid capability of the surface of a cover body bottom plate.

A filling type invisible well lid z-shaped clamping column reinforcing construction process comprises the following steps:

step 1, preparation before construction.

And 2, building a shaft.

Step 3, fixing a support: according to the pavement paving model built by BIM software, coordinate points of four corners of a support are determined on a construction drawing, a GPS positioning instrument is used for discharging the support diagonal points, the support is placed on a shaft, the fact that the four sides of the well seat are solid is ensured, the height of a plane and the ground paved around the plane is on the same horizontal line, a clamping column is fixed with the shaft by using bolts, and a concrete protection ring is poured on the outer ring of the support and is connected with a well periphery base layer.

And 4, installing the cover body.

And 5, paving a cover paving layer.

And 6, curing.

Preferably: the paving method of the cover paving layer in the step 5 is as follows:

And 51, paving a pattern according to the BIM model, rechecking and paying off, checking squares by using a measuring instrument, checking whether the squares are square or not by using a diagonal line, and determining a datum line. Each square is determined according to the block size of the pavement precast block and the width of the road, then the design elevation is marked on deadman, the datum point for paving the pavement brick is set on the border stone edge by the transverse center line of the midpoint of each cover body, the pavement brick is paved around the well, and two mutually perpendicular datum lines are set through the datum point according to the direction of the pavement brick. When the following curb is paved, the curb is a datum line. When paving the pavement bricks at the same time by the datum points of the curb of each well edge, calculating the distance between the two datum points according to the shape and the size.

And step 52, adopting sand in cement as a leveling layer.

Step 53, laying a first row of template bricks in the square according to the line and standard seam width according to the line laying elevation, then hanging a longitudinal line, a transverse line, a longitudinal line, a transverse line and a template brick. The straight longitudinal line should extend distally to keep the longitudinal seam straight and straight. The curved sections may be built into a fan shape. When the brick is paved, the brick is lightly laid, and the center of the brick is tapped by a mallet or a rubber mallet, so that the brick cannot be filled with ash or a supporting pad hard material, and the brick must be stably paved on full mortar without any gap. The flatness should be checked by the leveling rod at any time, and the problems are corrected in time. At the same time, gaps with curbstones should be avoided, and if any, the average slit width should be adjusted or moved to one side of the structure.

Step 54, pouring and rolling: and (5) after paving the pavement bricks, filling gaps by a rolling machine.

Step 55, cleaning.

By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:

1. The utility model provides a filling type invisible well lid 'z' -shaped clamping column, which is characterized in that four 'z' -shaped clamping columns are welded at four corners of a support, bolts are used for connecting the clamping columns with screw holes of clamping grooves, concrete is used for pouring around the support to form a protection ring, a cover plate cover with welded reinforcing steel bars is arranged in the support to complete the installation of the cover plate, and the 'z' -shaped clamping columns and the support are arranged above the filling type invisible well lid, so that acting force can not directly act on the well lid after the cover plate is covered, thereby avoiding the problem that the acting force damages the well lid, and enabling the well lid to have good anti-theft property, attractive appearance, practicability, rust resistance and protection capability, and greatly prolonging the service life of the well lid structure.

2. The utility model provides a filling type invisible well lid z-shaped clamping column, which is characterized in that after the filling type invisible well lid mounting clamping column and a support are adopted, concrete is poured to form a concrete layer, so that the surface of the concrete layer and a pavement form a plane, the whole structure is compact, the strength is high, the problem that vehicles roll and trample for a long time collapse is avoided, the vehicles can pass through and walk conveniently, and the service life of the well lid structure is greatly prolonged.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model.

FIG. 2 is a schematic view of the structure of the fixing slot of the present utility model.

FIG. 3 is a schematic view of the structure of the support of the present utility model.

FIG. 4 is a schematic view of the structure of the "z" type cartridge of the present utility model.

Fig. 5 is a bottom view of the cover structure of the present utility model.

In the figure: 1. roadbed. 2. And a support groove. 3. A clamping groove. 4. And (3) a threaded hole. 5. And (5) clamping the column. 6. And a fixing hole. 7. And (5) a support. 8. And (5) a bolt. 9. And (3) a concrete layer. 10. And a cover plate. 11. Reinforcing steel bars.

Detailed Description

The utility model is further illustrated by the following examples:

Example 1

As shown in fig. 1-5, the utility model provides a filling type invisible well lid 'z' -shaped clamping column, which comprises a roadbed 1, wherein a support groove 2 is formed in the inner side of the roadbed 1, a clamping groove 3 is formed in the upper surface of the roadbed 1, a threaded hole 4 is formed in the bottom of the clamping groove 3, a clamping column 5 is clamped in the clamping groove 3, a fixing hole 6 is formed in the surface of the clamping column 5, a bolt 8 is inserted into the inner wall of the fixing hole 6, a support 7 is welded at one end of the clamping column 5, a concrete layer 9 is poured on the upper surface of the roadbed 1, and a cover plate 10 is supported on the inner wall of the support 7.

In this embodiment, weld four "z" type card posts 5 in the four corners of support 7, use bolt 8 to be after its threaded connection on the screw hole 4 of draw-in groove 3, use concrete to pour around support 7 and mix and form the guard circle, use the apron 10 lid of welding reinforcing bar 11 to accomplish the installation of apron 10 in the inside of support 7, through installation "z" type card post 5 and support 7 in the top of the stealthy well lid of filling, effort can not directly be acted on the well lid after covering apron 10, thereby avoided the effort to destroy the problem of well lid, make it possess good theftproof nature, aesthetic property, practicality, rust-resisting property, and protective capability, the life of well lid structure has been improved greatly.

Example 2

As shown in fig. 1-5, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, four clamping columns 5 are welded at four corners of the bottom of the support 7, the bottom of the support 7 is contacted with the support groove 2 after the clamping columns 5 are clamped with the clamping grooves 3, the bolts 8 penetrate through the fixing holes 6 and are connected in the threaded holes 4 in a threaded mode to jointly form a clamping column 5 fixing structure, the support groove 2 and the clamping grooves 3 are filled with concrete through the concrete layer 9, and the pouring height is overlapped with the top of the support 7 to form a protection ring structure.

In this embodiment, four clamping columns 5 are connected with the support 7 through welding, and the bottom of the support 7 contacts with the support groove 2, so that loosening, displacement and subsidence of the support can be prevented from being influenced by later construction procedures, the support is formed into an integral structure, the service life of the support 7 is greatly prolonged, and the supporting capacity is improved. In order to ensure that the clamping columns 5 are clamped in the clamping grooves 3 and cannot be subjected to construction pouring to generate position offset, the clamping columns 5 are connected to the threaded holes 4 through bolts 8 in a threaded manner, so that the clamping columns 5 and the supports 7 are fixed, a firm structure is adopted for subsequent construction, and the occurrence of reworking due to position dislocation is avoided. The clamping columns 5 and the supports 7 can be blocked in the concrete by using the concrete to pour the support grooves 2 and the clamping grooves 3, so that the support columns and the supports form an integral structure, and the periphery of the cover plate 10 can be prevented from sinking after the cover plate 10 is mounted subsequently, thereby prolonging the service life of the cover plate 10.

Example 3

As shown in fig. 1-5, on the basis of embodiment 1 and embodiment 2, the present utility model provides a technical solution: preferably, concrete poured on the concrete layer 9 is mixed and stirred at a mass ratio of cement to sand of 1:5, the concrete layer 9 with a spacing of 40 cm is poured around the support 7, steel bars 11 are welded at the bottom of the cover plate 10, the welded steel bars 11 are arranged in a crisscross manner to form a supporting reinforcing structure, welding skills of double-sided fillet welding and full-length full-welding are adopted among the steel bars 11, the steel bars with a diameter of 10 mm are adopted for welding at a spacing of 100 mm, the surface of the cover plate 10 is uniformly coated with epoxy resin materials, and broken stones are uniformly distributed and scattered to form a firm rough surface structure.

A filling type invisible well lid z-shaped clamping column reinforcing construction process comprises the following steps:

Step 1, preparation before construction

According to the processing of the matched stainless steel support and the cover body which pass the field inspection, the size of the well cover is more than 10cm larger than that of the field wellhead (the field operation is performed by technicians of a manufacturer).

And 1, welding Z-shaped clamping columns at two ends of two symmetrical side surfaces at the bottom of the support.

And 2, welding a steel bar net on the bottom plate of the cover body.

Step 2, shaft masonry: and cleaning a base layer with the width of 30cm around the shaft. According to the elevation of the pavement surface layer, the elevation of the pit shaft is carefully adjusted to be-30 mm according to the elevation of the pavement surface layer by combining the elevation of curbstone at two sides of the pavement on the construction site by adopting a double-cross-line method, so that the elevation of the pit shaft top surface meets the installed elevation of the pit frame and the cover plate and the surface layer is flush.

Step 3, fixing a support: according to the pavement paving model built by BIM software, coordinate points of four corners of a support are determined on a construction drawing, a GPS positioning instrument is used for discharging the support diagonal points, the support is placed on a shaft (the fact that four sides of the well seat are kept solid, the height of a plane and the ground paved around the well seat are on the same horizontal line, the whole is stable and firm), a clamping column and the shaft are fixed by bolts, and deviation of pavement bricks due to movement of the support caused by procedures such as concrete pouring and edge covering is avoided. And a concrete protection ring with the width of 40cm is poured on the outer ring of the support and is connected with the well periphery base layer. The workability of the concrete should be strictly controlled and the concrete should be covered and maintained in time. When the support is installed, concrete or cement mortar is firstly used for trowelling on the brick masonry of the wellhead.

Step 4, installing a cover body: when the cover body is put into, sundries in the support should be cleaned first, so that the influence on flatness and the difficulty in opening in the future are avoided. Epoxy resin is coated on the surface of the bottom plate of the cover body, and broken stone is uniformly distributed to form a firm rough surface, so that pavement of the surface layer and anti-skid capability of the bottom plate of the cover body are enhanced.

Step 5, paving a cover paving layer: and laying a height control net before laying the pavement layer, and laying the pavement layer according to the height of the control net.

And 51, paving a pattern according to the BIM model, rechecking and paying off, checking squares by using a measuring instrument, checking whether the squares are square or not by using a diagonal line, and determining a datum line. Each square is determined according to the block size of the pavement precast block and the width of the pavement, and is preferably about 5 m. And marking a design elevation on deadman, setting paving brick datum points (initial paving points) on the border stone edges by using the transverse center line of the midpoint of each cover body, paving the paving bricks around the well, and setting two mutually perpendicular datum lines through the datum points according to the paving brick direction. When the following curb is paved, the curb is a datum line. When the reference points of the curb of each well side are paved with pavement bricks at the same time, the distance between the two reference points is calculated according to the shape and the size, and the distance between the two reference points is not excessively large and is not more than 10m. If the distance is large, the datum line of the longitudinal and transverse parallel pavement bricks with the distance of 5-10 m is preferably arranged according to the engineering scale and the block type size for controlling the paving progress.

Step 52, the mass ratio of cement to sand is 1:5-1:7, and the binding force and water permeability are optimal. Therefore, the sand in the 'dry and hard' cement with the mass ratio of 1:5 is used as a leveling layer, and the thickness is 2.5cm. The flatness of the leveling layer needs to be ensured in the construction process, and the gradient meets the design requirement.

Step 53, laying a first row of template bricks in the square according to the line and standard seam width according to the line laying elevation, then hanging a longitudinal line, a transverse line, a longitudinal line, a transverse line and a template brick. The straight longitudinal line should extend distally to keep the longitudinal seam straight and straight. The curved sections may be built into a fan shape. When the brick is paved, the brick is lightly laid, and the center of the brick is tapped by a mallet or a rubber mallet, so that the brick cannot be filled with ash or a supporting pad hard material, and the brick must be stably paved on full mortar without any gap. The flatness should be checked by the leveling rod at any time, and the problems are corrected in time. At the same time, gaps with curbstones should be avoided, and if any, the average slit width should be adjusted or moved to one side of the structure. When gaps appear on one side of the structure and the well edge, the gaps can be filled up by cutting bricks, if necessary, fine stone concrete can be used for filling up and carving seams similar to the tiles so as to keep beautiful.

Step 54, pouring and rolling: and (5) after paving the pavement bricks, filling gaps by a rolling machine. The rolling is carried out by using a special hand rubber wheel. The rolling direction and the pavement direction are perpendicular to the length direction of the pavement bricks, fine sand is used for pouring the gaps, and sand pouring and vibration rolling are repeatedly performed until filling and compaction are completed. When the ground surface which is frequently eroded is encountered, cement sand fine dry slurry with the ratio of 1:2 is adopted for pouring seams, and the cement sand fine dry slurry is poured in for multiple times and is watered for maintenance.

Step 55, cleaning: after the detection is finished, the materials scattered at all positions are concentrated, and the clean and tidy construction site is maintained. And detecting and maintaining the finished surface layer according to the quality requirement.

The cover paving layer is paved with the transverse center line of the midpoint of each cover, the paving brick datum point is set on the border stone edge, and the paving layer is paved around, so that the phenomenon that pavement layers are paved to the well cover in the prior construction process and the pavement bricks cannot be paved integrally is avoided, the coordination consistency of the well cover and the surrounding environment is realized, and the quality of the appearance is improved.

And 6, curing: after paving the pavement layer, the pedestrians are prohibited from walking on the pavement layer, and the pavement layer is timely sprayed with water for maintenance. After the cement mortar reaches the design strength, pedestrians can be opened to pass through.

In this embodiment, in order to make the concrete have higher cohesive force and water permeability, the concrete quality obtained by mixing and stirring the concrete raw materials in a ratio of 1:5 through testing is higher, so that a guarantee is provided for subsequent construction leveling, meanwhile, the strength of the ground around the well cover can be improved by pouring the concrete layer 9 with the interval of 40 cm around the support 7, and the problem of collapse is avoided when the concrete is used for a long time. Because the bearing of the bearing surface of the cover plate 10 needs to have good pressure resistance, the bottom of the cover plate 10 can be reinforced by adopting the crisscross welding steel bars 11 to form a supporting structure, and the service life of the cover plate 10 is greatly prolonged. The primary reinforcing steel bar with the diameter of 10 mm is high in strength and reliability, can bear larger load and stress, is welded by double-sided fillet welding and full-length full-welding at intervals of 100 mm, can greatly improve the bearing capacity of the welded integral structure, can ensure that the cover surface of the cover plate 10 is not deformed after long-time rolling and treading, and improves the service life of the well cover structure. Epoxy resins are a commonly used organic compound and have good chemical and heat resistance. It is a polymer composed of two main components, epoxy resin and curing agent such as amine or anhydride. When the two components are mixed and applied at the appropriate temperature and time, they react to form a hardened solid material. Epoxy resin is often used as an adhesive for its excellent adhesion and corrosion resistance, and can adhere its crushed stone to the surface of the cover plate 10 for enhancing the paving of the deck and the anti-slip ability of the cover bottom plate surface.

As shown in fig. 1 to 5, four z-shaped clamping columns 5 are welded at four corners of a support 7, the clamping columns are connected to threaded holes 4 of a clamping groove 3 in a threaded mode through bolts 8, concrete is poured around the support 7 to form a protection ring to form a concrete layer 9, a cover plate 10 is covered in the support 7 through a cover plate 10 with welded steel bars 11, and the cover plate 10 is modified to be installed.

On the basis of the original filling type invisible well lid construction, four clamping columns are additionally arranged at the bottom of a support, the position and the elevation of a well seat are determined according to curbstones at two sides of a sidewalk, the clamping columns are fixed with a shaft by using bolts, a concrete protection ring with the width of 40cm is poured on the outer ring of the support and is connected with a well Zhou Jiceng, and the influence of later construction procedures on loosening, displacement, sinking and the like of the support is avoided. During the construction of the cover plate, according to the well cover size, the stress and other conditions, a reinforcing mesh is reasonably added on the well cover bottom plateScrew steel @ 100), adopting double-sided fillet welding, full length full welding, brushing epoxy resin on the surface of the bottom plate of the cover plate, uniformly scattering broken stone to form a firm rough surface, butt welding a 5-thick cast iron sheet of the well cover, and reserving a stainless steel sheetHoles, edges are aligned with the well cover frame, so that the whole well cover is not deformed, and damage of a paving layer on a well cover bottom plate is avoided.

The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.

Claims (6)

1. The utility model provides a stealthy well lid "z" type card post of filling, includes road bed (1), its characterized in that: support groove (2) have been seted up to the inboard of road bed (1), draw-in groove (3) have been seted up to the upper surface of road bed (1), screw hole (4) have been seted up to the bottom of draw-in groove (3), the inside joint of draw-in groove (3) has card post (5), fixed orifices (6) have been seted up on the surface of card post (5), peg graft there is bolt (8) the inner wall of fixed orifices (6), the one end welding of card post (5) has support (7), concrete layer (9) have been pour to the upper surface of road bed (1), the inner wall support of support (7) has apron (10).

2. The filled invisible well lid "z" shaped clip according to claim 1, wherein: four clamping columns (5) are welded at four corners of the bottom of the support (7), and the bottom of the support (7) is contacted with the support groove (2) after the clamping columns (5) are clamped with the clamping grooves (3).

3. The filled invisible well lid "z" shaped clip according to claim 2, wherein: the bolts (8) penetrate through the fixing holes (6) to be connected in the threaded holes (4) in a threaded mode, and the fixing structure of the clamping column (5) is formed jointly.

4. A filled invisible well lid "z" shaped clip according to claim 3 wherein: the concrete layer (9) is poured by adopting concrete to fill the support groove (2) and the clamping groove (3), and the pouring height is overlapped with the top of the support (7) to form a protection ring structure.

5. The filled invisible well lid "z" shaped clip according to claim 4, wherein: the bottom of the cover plate (10) is welded with steel bars (11), and the welded steel bars (11) are arranged in a crisscross manner to form a supporting and reinforcing structure.

6. The filled invisible well lid "z" shaped clip according to claim 5, wherein: the surface of the cover plate (10) is uniformly coated with epoxy resin material, and broken stone is uniformly scattered to form a firm rough surface structure.