CN108193717B - Inspection well lid capable of automatically lifting and lowering with damping function - Google Patents
Inspection well lid capable of automatically lifting and lowering with damping function Download PDFInfo
- Publication number
- CN108193717B CN108193717B CN201810076422.5A CN201810076422A CN108193717B CN 108193717 B CN108193717 B CN 108193717B CN 201810076422 A CN201810076422 A CN 201810076422A CN 108193717 B CN108193717 B CN 108193717B
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- CN
- China
- Prior art keywords
- well lid
- connecting rod
- well
- manhole cover
- cover
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1409—Covers for manholes or the like; Frames for covers adjustable in height or inclination
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1472—Cover entirely made of synthetic material
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
Abstract
The invention provides an inspection well lid capable of automatically lifting with a damping function, which comprises a well lid body, wherein the well lid body comprises a well lid upper part and a well lid lower part, a well lid support is arranged on the periphery of the well lid upper part, a well lid lower part is arranged at the lower end of the well lid upper part, a well lid central drain hole is arranged at the central positions of the well lid upper part and the well lid lower part, a strong spring is arranged in the well lid lower part, a rainwater collector is correspondingly arranged at the central position of the lower part of the rainwater collector, and a water permeable hole is arranged at the central position of the lower part of the rainwater collector. The inspection well lid is simple in structure, good in damping effect, capable of automatically adjusting the height simultaneously, and capable of being set up by the powerful spring, and is arranged on the same horizontal plane with the ground under normal conditions, and the powerful spring is in a compressed state at this time and is used for generating elasticity for the well lid support, so that the well lid cannot sink when the well lid passes through a vehicle.
Description
Technical Field
The invention belongs to the technical field of general (public) building equipment, and particularly relates to an inspection well lid capable of automatically lifting and lowering, which has a damping function.
Background
At present, with the development of modern society, the rapid development of urban road construction in China, the maintenance and repair work of urban roads are increasingly important, and the aspects of urban road landscapes, driving safety and environmental greening are also directly reflected. More and more overground lines gradually turn underground for city beautification, so that the occupancy of the inspection well in the city is enlarged, and maintenance and humanized design of the inspection well are improved, so that the urban life can be facilitated, and the city can be beautified.
However, for many years, the problems of the whole manhole cover support sinking, broken periphery of the manhole cover (eye-rot phenomenon) and the like exist in municipal road engineering to different degrees, so that a plurality of problems are caused. Firstly, since the inspection wells are usually located at two sides of the road, the two sides of the road are usually defined into areas with poor damping effect such as non-motor lanes and the like for driving in urban road design, which can cause serious bump feeling when the type of vehicle passes through the submerged or broken inspection wells, or the driver adopts an emergency braking mode for weakening the bump feeling, so that traffic accidents are easy to occur. Secondly, in order to weaken the generation of the situations, some cities deliberately place the manhole cover at a position higher than the ground by a certain height when installing the manhole cover, so that another problem is generated, namely, the manhole cover is higher than the ground in rainy days, so that rainwater on the road surface cannot be collected in one place in time, the purpose of drainage is achieved, and inconvenience is caused to the traveling of pedestrians and vehicles.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides the manhole cover capable of automatically lifting with the damping function, which solves the problems that the manhole is usually positioned at two sides of a road, and the two sides of the road are usually divided into areas with poorer driving running effects such as non-motor lanes and the like when the road is designed in a city, when the type of vehicle passes through the submerged or broken manhole, serious bumping feeling is generated, or a driver adopts an emergency braking mode to weaken the bumping feeling, traffic accidents are easy to generate, and for weakening the generation of the situations, the inspection is intentionally placed at a position higher than the ground by a certain height when the manhole is installed in certain cities, so that the rainwater on the road surface cannot be collected at one place in time due to the fact that the manhole is higher than the ground in rainy days, thereby achieving the aim of draining, and causing inconvenient problems for pedestrians and vehicles to travel.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a but inspection shaft well lid of automatic rising and lowering with shock-absorbing function and application method thereof, includes well lid upper portion, well lid lower part, well lid upper portion periphery is provided with the well lid support, well lid upper portion lower extreme is provided with well lid lower part, well lid upper portion with well lid lower part central point puts and is provided with well lid central drainage hole, be provided with powerful spring in the well lid lower part, well lid lower part corresponds and is provided with the rainwater collector, rainwater collector lower part central point puts the department and is provided with the hole that permeates water, well lid lower part pass through link mechanism with the well lid support is connected, well lid upper portion with be provided with the gap groove between the well lid support, well lid upper portion upper surface is provided with the anti-skidding texture between be provided with trade mark suppression tablet, well lid lower part lower extreme is provided with the rainwater collector, rainwater collector lower part central point puts the department and is provided with the hole that permeates water, well lid support lower extreme is provided with first connecting rod, first connecting rod other one end is provided with the second connecting rod, first connecting rod and second connecting rod are provided with the hole that corresponds with between the well lid upper portion and the position.
In order to further improve the use effect of the manhole cover, the upper part of the manhole cover is made of high-strength rubber, the manhole cover drain hole is formed in the corresponding position of the upper part of the manhole cover and the lower part of the manhole cover, and the central drain hole of the manhole cover is formed in the central position of the upper part of the manhole cover and the central position of the lower part of the manhole cover.
In order to further improve the using effect of the manhole cover, the lower part of the manhole cover is made of steel, and the powerful spring is anchored with the lower part of the manhole cover.
In order to further improve the use effect of the manhole cover, the rainwater collector is connected with the lower part of the manhole cover through a clamping ring, and the water permeable hole is formed in the center position of the lower end of the rainwater collector.
In order to further improve the using effect of the manhole cover, the upper end of the first connecting rod is hinged to the lower portion of the manhole cover, the second connecting rod is L-shaped, the second connecting rod is hinged to the first connecting rod, the other end of the second connecting rod is hinged to the manhole cover support, the spring is welded to the middle of the first connecting rod, and the other end of the spring is welded to the middle of the second connecting rod.
In order to further improve the use effect of the manhole cover, the slit groove is formed between the upper part of the manhole cover and the manhole cover support.
In order to further improve the using effect of the manhole cover, the anti-slip texture is formed on the upper part of the manhole cover, and the trademark pressing plate is formed on the upper part of the manhole cover.
(III) beneficial effects
The invention provides an inspection well lid capable of automatically lifting and lowering with a damping function, which comprises the following steps of
The beneficial effects are that:
1. the inspection well lid is simple in structure, good in damping effect, capable of automatically adjusting the height simultaneously, and capable of being set up by the powerful spring, and is arranged on the same horizontal plane with the ground under normal conditions, and the powerful spring is in a compressed state at this time and is used for generating elasticity for the well lid support, so that the well lid cannot sink when the well lid passes through a vehicle.
2. This inspection shaft well lid, through setting up well lid upper portion, because well lid upper portion is the rubber material, when vehicle tire rolls, the two contact is good, can not produce the sense of jolting to reach shock-absorbing function.
3. This inspection well lid, through setting up rain collector, when rainy day, when ground begins ponding, in flowing into rain collector through well lid wash port and well lid center wash port, when the rainwater volume in the rain collector reaches certain height H, the inspection well lid receives the produced tensile force of gravity of rainwater this moment, thereby the whole downwardly moving of well lid, make well lid upper portion and well lid support laminating, thereby make the inspection well lid be less than ground, do benefit to the drainage of rainwater, be convenient for pedestrian and vehicle's pass through, when the rainwater in the rain collector is whole to be discharged, the inspection well lid resumes normal state, play shock-absorbing function.
4. This inspection well lid, through setting up first connecting rod the second connecting rod with the spring constitutes spring hinge mechanism, and this spring hinge mechanism stretches the well lid when the well lid is in normal position on the one hand for the well lid can not produce when the driving passes through and remove, plays fixed stretching effect, and on the other hand prevents when the well lid is in the state of sinking that well internal pressure is too big, and jack-up well lid causes the well lid to float, remove, thereby takes place the accident, makes the well lid receive stretching effect, uses safelyr.
5. This inspection well lid, through setting up anti-skidding texture, on the well lid upper portion anti-skidding texture has good anti-skidding effect, even in rainy day, also can produce great frictional force when the vehicle passes through, improves driving safety.
Drawings
FIG. 1 is a schematic diagram of the normal state of the present invention;
FIG. 2 is a schematic view of the present invention during rain;
FIG. 3 is a schematic view of the lower part of the manhole cover of the invention;
FIG. 4 is a schematic view of an upper portion of a manhole cover according to the present invention;
FIG. 5 is an enlarged view of a portion of the manhole cover and the manhole cover support of the present invention during rain;
fig. 6 is an enlarged view of a portion of the spring hinge mechanism in a normal state of the invention.
In the figure: 1 well lid support, 2 well lid upper portion, 3 well lid wash port, 4 well lid center wash port, 5 well lid lower part, 6 powerful springs, 7 rainwater collectors, 8 holes that permeate water, 9 first connecting rod, 10 second connecting rod, 11 springs, 12 gap grooves, 13 antiskid texture, 14 trade mark suppression tablet.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 6, an inspection well lid capable of automatically lifting with a damping function comprises an upper well lid part 2 and a lower well lid part 5, wherein a well lid support 1 is peripherally arranged on the upper well lid part 2, a well lid lower part 5 is arranged at the lower end of the upper well lid part 2, a well lid central drain hole 4 is arranged at the central position of the upper well lid part 2 and the lower well lid part 5, a strong spring 6 is arranged in the lower well lid part 5, a rainwater collector 7 is correspondingly arranged at the lower well lid part 5, a water permeable hole 8 is arranged at the central position of the lower part of the rainwater collector 7, the lower well lid part 5 is connected with the well lid support 1 through a spring hinge mechanism, a gap groove 12 is arranged between the upper well lid part 2 and the well lid support 1, an anti-skid texture 13 is arranged on the upper surface of the upper well lid part 2, a trademark pressing plate 14 is arranged between the anti-skid texture 13 on the upper surface of the upper well lid part 2, a rainwater collector 7 is arranged at the lower end of the lower well lid part 5, a first connecting rod 9 is arranged at the central position of the lower well lid, a second connecting rod 9 is arranged at one end of the first connecting rod 9, a water permeable hole 10 is arranged between the first connecting rod 9 and the second connecting rod 10 is arranged at the lower end of the upper well lid part of the well lid support 1, and the connecting rod 3 is provided with a water draining hole 11.
The specific principle is as follows: under normal conditions, the well cover is placed on the same horizontal plane with the ground, at the moment, the strong spring 6 is in a compressed state, and generates elasticity for the well cover support 1, so that the well cover cannot sink when the vehicle passes, meanwhile, because the upper part 2 of the well cover is made of rubber, when the vehicle tires are rolled, the upper part 2 of the well cover is in contact with the well cover, and bump feeling cannot be generated, so that the anti-slip texture 13 on the upper part 2 of the well cover has good anti-slip effect, the running safety is improved, when water begins to accumulate on the ground in rainy days, the water flows into the rainwater collector 7 through the well cover drain hole 3 and the well cover center drain hole 4, the sum of the areas of the well cover drain hole 3 and the well cover center drain hole 4 is larger than the area of the water permeable hole 8 on the rainwater collector 7, due to the design, when the rainwater amount in the rainwater collector 7 reaches a certain height H, at this time, the manhole cover is subject to the action of the tensile force generated by the gravity of rainwater, so that the whole manhole cover moves downwards, the upper part 2 of the manhole cover is attached to the manhole cover support 1, the manhole is lower than the ground level, the drainage of the rainwater is facilitated, the passing of pedestrians and vehicles is facilitated, when the rainwater in the rainwater collector 7 is completely discharged, when the vehicles contact and crush the manhole cover, the manhole cover is subject to the action of the pressure of the vehicles, so that the whole manhole cover is sprung upwards, due to the stretching action of the spring hinge mechanism, the manhole cover is in a position facing the ground, namely the manhole cover is restored to the normal state, the first connecting rod 9, the second connecting rod 10 and the spring 11 form the spring hinge mechanism, the upper ends of the first connecting rod 9 are hinged and fixed on the bottom surface of the lower part 5 of the manhole cover, one end of the second connecting rod 10 is hinged on the lower end of the first connecting rod 9, the other end of the second connecting rod 10 is hinged and fixed on the bottom surface of the well lid support 1, two ends of the spring 11 are respectively connected to the middle parts of the first connecting rod 9 and the second connecting rod 10, the spring hinge structure stretches the well lid when the well lid is at a normal position, so that the well lid can not move when the well lid passes through a vehicle, a fixed stretching effect is achieved, on the other hand, the well lid is prevented from being excessively large in pressure when the well lid is in a sinking state, the well lid is jacked up to cause the well lid to float and move, and accordingly accidents occur, so that the well lid is stretched.
To sum up, this inspection well lid, simple structure, the shock attenuation is effectual, but simultaneously automatically regulated height, through setting up powerful spring 6, under the normal condition, the well lid is arranged in with the same horizontal plane on ground, powerful spring 6 is in compressed state this moment, produces elasticity to well lid support 1 for the well lid can not sink when the driving passes through.
Secondly, through setting up well lid upper portion 2, because well lid upper portion 2 is the rubber material, when vehicle tire rolls, the two is indirect good, can not produce the sense of jolting to reach shock-absorbing function.
And, through setting up rainwater collector 7, when rainy day, when the ponding begins on ground, in flowing into rainwater collector 7 through well lid wash port 3 and well lid center wash port 4, when the rainwater volume in rainwater collector 7 reaches certain height H, the inspection well lid receives the produced tensile force of gravity of rainwater this moment, thereby the whole downwardly moving of well lid, make well lid upper portion 2 and well lid support 1 laminating, thereby make the inspection well lid be less than ground, do benefit to the drainage of rainwater, the passerby of being convenient for and vehicle passes through, when the rainwater in the rainwater collector 7 is whole to be discharged, the inspection well lid resumes normal condition.
And, constitute spring hinge mechanism through setting up first connecting rod 9, second connecting rod 10 and spring 11, this spring hinge mechanism is in the tensile well lid when the well lid is in normal position on the one hand for the well lid can not produce when the driving passes through and remove, plays fixed stretching effect, on the other hand prevents when the well lid is in the state of sinking that well internal pressure is too big, jack-up well lid causes the well lid to float, remove, thereby take place the accident, make the well lid receive stretching effect, and is practical safer.
And, through setting up anti-skidding texture 13, anti-skidding texture 13 on the well lid upper portion 2 has good anti-skidding effect, in time in the rainy day, also can produce great frictional force when the vehicle passes by, improves driving safety.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and principles of the present invention.
Claims (8)
1. An inspection well lid with shock-absorbing function and capable of automatically lifting, which is characterized in that: including well lid upper portion (2), well lid lower part (5), well lid upper portion (2) periphery is provided with well lid support (1), well lid upper portion (2) lower extreme is provided with well lid lower part (5), well lid upper portion (2) with well lid lower part (5) central point puts and is provided with well lid center wash port (4), be provided with in well lid lower part (5) along well lid lower part (5) radial distribution's powerful spring (6), powerful spring (6) compression sets up between well lid lower part (5) and well lid support (1), well lid lower part (5) lower extreme is provided with rainwater collector (7) that are connected to well lid lower part (5), rainwater collector (7) lower part central point puts department be provided with water permeable hole (8), well lid lower part (5) through link mechanism with well lid support (1) central point put, well lid upper portion (2) with the top surface and the ground of well lid support (1) are held at ordinary times, well lid upper portion (2) with well lid support (1) between the radial distribution, well lid support (1) is provided with between the surface (13) and is provided with between the surface of the well lid (13) slide-proof tablet (13), the lower end of the well cover support (1) is provided with a first connecting rod (9), the other end of the first connecting rod (9) is provided with a second connecting rod (10), a spring (11) is arranged between the first connecting rod (9) and the second connecting rod (10), the well lid upper portion (2) with corresponding position department is provided with well lid wash port (3) on well lid lower part (5), well lid wash port (3) with the area sum of well lid center wash port (4) is greater than the area of permeable hole (8) on rainwater collector (7).
2. An automatically liftable manhole cover with a damping function according to claim 1, characterized in that: the well lid upper portion (2) adopts high strength rubber to make, well lid wash port (3) shaping in well lid upper portion (2) with well lid lower part (5), well lid center wash port (4) shaping in well lid upper portion (2) central point put and well lid lower part (5) central point put.
3. An automatically liftable manhole cover with a damping function according to claim 1, characterized in that: the well lid lower part (5) is made of steel, and the powerful spring (6) is anchored with the well lid lower part (5).
4. An automatically liftable manhole cover with a damping function according to claim 1, characterized in that: the rainwater collector (7) is connected with the lower part (5) of the well lid through a clamping ring, and the water permeable hole (8) is formed in the center of the lower end of the rainwater collector (7).
5. An automatically liftable manhole cover with a damping function according to claim 1, characterized in that: the first connecting rod (9) upper end with well lid lower part (5) is articulated, second connecting rod (10) are L type, second connecting rod (10) with first connecting rod (9) are articulated, second connecting rod (10) other end with well lid support (1) are articulated, spring (11) anchor is in first connecting rod (9) middle part, spring (11) other end anchor is in second connecting rod (10) middle part.
6. An automatically liftable manhole cover with a damping function according to claim 1, characterized in that: the gap groove (12) is formed between the manhole cover upper part (2) and the manhole cover support (1).
7. An automatically liftable manhole cover with a damping function according to claim 1, characterized in that: the anti-slip texture (13) is formed on the upper part (2) of the well cover, and the trademark pressing plate (14) is formed on the upper part (2) of the well cover.
8. A method of using an automatically liftable manhole cover with a shock absorbing function according to claim 1, characterized in that: under normal conditions, the well cover is arranged on the same horizontal plane with the ground, at the moment, the strong spring (6) is in a compressed state and generates elasticity for the well cover support (1) so that the well cover cannot sink when the vehicle passes through, meanwhile, as the upper part (2) of the well cover is made of rubber, when the vehicle tires are rolled, the upper part (2) of the well cover is in contact with the rubber, and the bumping sensation cannot be generated, so that the anti-skid texture (13) on the upper part (2) of the well cover has a good anti-skid effect, the driving safety is improved, when the ground starts to accumulate water in rainy days, the well cover flows into the rainwater collector (7) through the well cover drain hole (3) and the well cover center drain hole (4), the sum of the areas of the drain hole (3) of the manhole cover and the central drain hole (4) of the manhole cover is larger than the area of the water permeable hole (8) on the rainwater collector (7), so when the rainwater amount in the rainwater collector (7) reaches a certain height H, the manhole cover is acted by the tensile force generated by the gravity of the rainwater at the moment, the whole manhole cover moves downwards, the upper part (2) of the manhole cover is attached to the manhole cover support (1), the manhole cover is lower than the ground level, the drainage of the rainwater is facilitated, the passing of pedestrians and vehicles is facilitated, when the rainwater in the rainwater collector (7) is completely drained, the whole manhole cover is sprung upwards under the action of the pressure of the vehicles at the moment, due to the tensile action of the spring hinge mechanism, make the inspection shaft well lid be in with the flat position of ground, inspection shaft well lid resumes normal condition promptly, by first connecting rod (9) second connecting rod (10) reaches spring (11) constitute spring hinge mechanism, and spring hinge mechanism has four altogether, the upper end hinge of first connecting rod (9) is fixed the bottom surface of well lid lower part (5), second connecting rod (10) one end hinge is in the lower extreme of first connecting rod (9), second connecting rod (10) other end hinge is fixed on the bottom surface of well lid support (1), the both ends of spring (11) are connected respectively first connecting rod (9) with the middle part of second connecting rod (10), and this spring hinge structure stretches the well lid when the well lid is in normal position for can not produce the removal when the driving, plays fixed stretching effect, on the other hand prevent that the well internal pressure is too big when the well lid is in the state of sinking, jack-up well lid causes the well lid to float, remove, thereby takes place the accident, makes the well lid receive stretching effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810076422.5A CN108193717B (en) | 2018-01-26 | 2018-01-26 | Inspection well lid capable of automatically lifting and lowering with damping function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810076422.5A CN108193717B (en) | 2018-01-26 | 2018-01-26 | Inspection well lid capable of automatically lifting and lowering with damping function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108193717A CN108193717A (en) | 2018-06-22 |
| CN108193717B true CN108193717B (en) | 2023-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810076422.5A Active CN108193717B (en) | 2018-01-26 | 2018-01-26 | Inspection well lid capable of automatically lifting and lowering with damping function |
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| Country | Link |
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| CN (1) | CN108193717B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109183963B (en) * | 2018-09-12 | 2021-04-30 | 重庆尚源建筑景观设计有限公司 | Gardens ponding drainage system |
| CN113668614A (en) * | 2021-07-13 | 2021-11-19 | 陈远高 | Safe explosion-proof well lid is used in municipal administration |
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| CN204919617U (en) * | 2015-09-02 | 2015-12-30 | 深圳市乾德建筑工程有限公司 | Take anti -theft device, automatic alarm's municipal works well lid |
| CN106120868A (en) * | 2016-08-22 | 2016-11-16 | 国网江苏省电力公司金湖县供电公司 | A kind of noiseproof manhole cover |
| CN206308710U (en) * | 2016-11-09 | 2017-07-07 | 杨泽庆 | Town road bilayer inspection well cover |
| CN206646553U (en) * | 2017-03-22 | 2017-11-17 | 刘毅 | Municipal works pavement of road inspection shaft well head |
| CN206833656U (en) * | 2017-04-17 | 2018-01-02 | 中山地通光纤科技有限公司 | A kind of cable shaft security pre-warning system |
| CN208201929U (en) * | 2018-01-26 | 2018-12-07 | 中国矿业大学 | It is a kind of with shock-absorbing function can automatic lifting inspection shaft well lid |
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| CN108193717A (en) | 2018-06-22 |
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