CN208266926U - A kind of plastic inspection well is with exempting from opening operation well lid - Google Patents

A kind of plastic inspection well is with exempting from opening operation well lid Download PDF

Info

Publication number
CN208266926U
CN208266926U CN201820841090.0U CN201820841090U CN208266926U CN 208266926 U CN208266926 U CN 208266926U CN 201820841090 U CN201820841090 U CN 201820841090U CN 208266926 U CN208266926 U CN 208266926U
Authority
CN
China
Prior art keywords
bearing base
module
axis
lift drive
drive mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201820841090.0U
Other languages
Chinese (zh)
Inventor
李福灿
翟元强
王志勇
郑永帅
周红伟
温宝红
白艳丽
陈开院
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Hecai Pipeline Co Ltd
Original Assignee
Henan Hecai Pipeline Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan Hecai Pipeline Co Ltd filed Critical Henan Hecai Pipeline Co Ltd
Priority to CN201820841090.0U priority Critical patent/CN208266926U/en
Application granted granted Critical
Publication of CN208266926U publication Critical patent/CN208266926U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

The utility model is related to a kind of plastic inspection well with exempting from opening operation well lid, including bearing base, transparent cover plate, positioning ring, lift drive mechanism, monitor station, monitoring camera, range unit, headlamp, battery group, photovoltaic power generation plate, wireless data communication antenna and control circuit, bearing base and transparent cover plate are connected with each other and constitute airtight cavity structure, photovoltaic power generation plate, wireless data communication antenna and control circuit are in bearing base, positioning ring and bearing base are connected with each other, monitor station rear end face is connect with bearing base lower end surface, front end face sets at least one monitoring camera, at least one range unit and several headlamps.On the one hand the utility model can effectively improve well lid equipment installation positioning, daily opening is closed the working efficiency of operation and labor intensity is effectively reduced, on the other hand integrated and high degree of automation, and there are good data communication capabilities, can effectively realize when not opening well lid can be to carrying out remote data acquisition in inspection shaft.

Description

A kind of plastic inspection well is with exempting from opening operation well lid
Technical field
The utility model relates to a kind of inspection well covers, are exactly a kind of plastic inspection wells with exempting from opening operation well lid.
Background technique
The inspection shafts equipment such as plastic inspection well, also known as " inspection shaft ", be setting plastic drainage pipeline intersection, turning, Locate at a certain distance at caliber or gradient change, on the place of drop or straight line pipeline section, convenient for inspecting periodically, cleaning, dredge The draining auxiliary construction of pipeline, usage amount is huge, currently used inspection shaft well lid equipment often plastics, concrete, casting The traditional structure well lid of the materials such as iron, although can satisfy the needs used, well lid self weight is often larger, and is installed to inspection Cooperation required precision is higher after looking on well, so as to cause daily maintenance is being carried out to inspection shaft, in management work, when needing to inspection Look into well well lid carry out opening and closing operation when, need staff scene to operate, and open and close well lid when work Intensity is big, and easily causes to seriously affect because of the damage of the recurring structures such as collision between well lid and inspection shaft when opening and closing well lid In addition to this service life that inspection shaft and well lid are set when opening inspection shaft checks its inside, generally requires work Personnel on site checks, or even needs to checking in inspection shaft under inspection personnel, to also significantly increase inspection shaft day Often maintenance, the labor intensity of management work and cost, therefore it is directed to this problem, there is an urgent need to develop a kind of novel inspection well covers Structure, to meet the needs of actual use.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of plastic inspection well with exempting from opening operation well Lid, the novel one side structure is simple, and flexible and convenient operation, versatility is good, can effectively improve well lid equipment installation positioning, day It often opens the working efficiency of closure operation and labor intensity is effectively reduced, on the other hand integrated and high degree of automation, and have Have good data communication capabilities, can effectively realize when not opening well lid can to carrying out remote data acquisition in inspection shaft, To greatly improve the convenience and flexibility of inspection shaft current check and upkeep operation, and improving the same of working efficiency When reduce labor intensity and cost and simultaneously in the process of running, can effectively improve comprehensive resource utilization rate, increasing Equipment operation energy consumption and construction input cost are reduced, is built to further increase well lid equipment using flexible and reduce inspection shaft And if daily management cost and labor intensity.
To achieve the goals above, the utility model is achieved through the following technical solutions:
A kind of plastic inspection well is with exempting from opening operation well lid, including bearing base, transparent cover plate, positioning ring, lifting driving Mechanism, monitor station, monitoring camera, range unit, headlamp, battery group, photovoltaic power generation plate, wireless data communication antenna and Control circuit, bearing base are that cross section is in " Qian ", and end face and transparent cover plate are connected with each other and constitute airtight cavity structure thereon, Photovoltaic power generation plate, wireless data communication antenna and control circuit are embedded in bearing base, wherein photovoltaic power generation plate and carrying base The coaxial distribution of seat, and connect by turntable mechanism with bearing base bottom, wireless data communication antenna at least one, embedded in carrying Base inner surface is simultaneously uniformly distributed around bearing base axis, and battery group, control circuit are mounted on bearing base bottom by sliding rail, And be located at below photovoltaic power generation plate, positioning ring is the closed hoop structure being coaxially distributed with bearing base, is being located at bearing base just Lower section is simultaneously connected with each other between bearing base by least three lift drive mechanisms, and lift drive mechanism is around bearing base axis Line is uniformly distributed, and monitor station is located at bearing base lower end surface and is coaxially distributed with bearing base, and monitor station rear end face passes through lifting driving Mechanism is connect with bearing base lower end surface, and front end face sets at least one monitoring camera, at least one range unit and several photographs Bright lamp, monitoring camera, range unit axis and monitor station axis parallelly distribute on, headlamp are evenly arranged on inspection around monitor station axis Scaffold tower side surface, and headlamp optical axis and monitor station axis parallelly distribute on, lift drive mechanism, monitoring camera, range unit, Headlamp, battery group, photovoltaic power generation plate, wireless data communication antenna and turntable mechanism are electrically connected with control circuit.
Further, the positioning ring internal diameter is 0.5-1.1 times of bearing base diameter, and positioning ring outer diameter is carrying 1.5-3 times of susceptor diameter.
Further, the bearing base upper surface sets at least two control handles, and the control handle surround and holds It is uniformly distributed and hinged with bearing base upper surface to carry base axis.
Further, the bearing base and positioning ring and lift drive mechanism corresponding position set locating slot, carry base The lift drive mechanism both ends of seat and positioning ring connection are hinged with bearing base side end face and positioning ring upper surface respectively, and lifting is driven Motivation structure axis and bearing base axis are in 0 ° -90 ° angles, and lift drive mechanism axis and bearing base axis are in 90 ° of folders When angle, lift drive mechanism is in bearing groove.
Further, it is driven between the monitor station and lift drive mechanism by turntable mechanism, monitor station axis and lifting Motivation structure axis is in 0 ° -90 ° angles.
Further, the turntable mechanism is any one in dimensional turntable or three-dimensional turntable, and on turntable mechanism If angular transducer, the angular transducer and control circuit are electrically connected.
Further, the control circuit include data processing module, drive module, modbus fieldbus module, Crystal oscillating circuit module, address coding/decoding module, data cache module, wireless communication module, charge-discharge control circuit module, electricity Protection circuit module and GPS positioning module, wherein the modbus fieldbus module respectively with crystal oscillating circuit module and Data cache module electrical connection, the data cache module separately respectively with data processing module, drive module, address code Decoding module, data cache module, wireless communication module, charge-discharge control circuit module, power protecting circuit module and GPS are fixed Position modular electrical connection, wherein the drive module respectively with lift drive mechanism, monitoring camera, range unit, illumination Lamp, battery group, photovoltaic power generation plate, wireless data communication antenna and turntable mechanism electrical connection, the charge and discharge control electricity Road module, power protecting circuit module respectively with battery group, photovoltaic power generation plate be electrically connected, the wireless communication module and GPS positioning module is electrically connected with wireless data communication antenna respectively.
The utility model one side structure is simple, flexible and convenient operation, and versatility is good, and it is fixed can effectively to improve the installation of well lid equipment Position, daily opening are closed the working efficiency of operation and labor intensity are effectively reduced, on the other hand integrated and high degree of automation, And there are good data communication capabilities, can effectively realize can adopt when not opening well lid to teledata is carried out in inspection shaft Collection to greatly improve the convenience and flexibility of inspection shaft current check and upkeep operation, and is improving working efficiency While reduce labor intensity and cost and simultaneously in the process of running, can effectively improve comprehensive resource utilization rate, add Big reduction equipment operation energy consumption and construction input cost, checks to further increase well lid equipment using flexible and reduce Well construction and daily management cost and labor intensity.
Detailed description of the invention
It is described in detail the utility model with reference to the accompanying drawings and detailed description.
FIG. 1 is a schematic structural view of the utility model;
Fig. 2 is control circuit electrical principle structural schematic diagram.
Specific embodiment
To be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, below In conjunction with specific embodiment, the utility model is further described.
A kind of plastic inspection well is with exempting from opening operation well lid as described in Fig. 1 and 2, including bearing base 1, transparent cover plate 2, fixed Position ring 3, lift drive mechanism 4, monitor station 5, monitoring camera 6, range unit 7, headlamp 8, battery group 9, photovoltaic power generation Plate 10, wireless data communication antenna 11 and control circuit 12, bearing base 1 are that cross section is in " Qian ", thereon end face and transparency cover Plate 2 is connected with each other and constitutes airtight cavity structure, and photovoltaic power generation plate 10, wireless data communication antenna 11 and control circuit 12 are embedding In in bearing base 1, wherein photovoltaic power generation plate 10 and the coaxial distribution of bearing base 1, and pass through turntable mechanism 13 and bearing base 1 Bottom connection, wireless data communication antenna 11 at least one are embedded in 1 inner surface of bearing base and equal around 1 axis of bearing base Cloth, battery group 9, control circuit 12 are mounted on 1 bottom of bearing base by sliding rail 14, and are located at 10 lower section of photovoltaic power generation plate, Positioning ring 3 is the closed hoop structure being coaxially distributed with bearing base 1, is located at immediately below bearing base 1 and between bearing base 1 It is connected with each other by least three lift drive mechanisms 4, lift drive mechanism 4 is uniformly distributed around 1 axis of bearing base, monitor station 5 Positioned at 1 lower end surface of bearing base and with the coaxial distribution of bearing base 1,5 rear end face of monitor station by lift drive mechanism 4 and carrying The connection of 1 lower end surface of pedestal, front end face set at least one monitoring camera 6, at least one range unit 7 and several headlamps 8, supervise Camera 6,5 axis parallelly distribute on of 7 axis of range unit and monitor station are controlled, headlamp 8 is evenly arranged on detection around 5 axis of monitor station 5 side surface of platform, and 8 optical axis of headlamp and 5 axis parallelly distribute on of monitor station, lift drive mechanism 4, monitoring camera 6, ranging dress Set 7, headlamp 8, battery group 9, photovoltaic power generation plate 10, wireless data communication antenna 11 and turntable mechanism 13 and control circuit 12 electrical connections.
In the present embodiment, 3 internal diameter of positioning ring is 0.5-1.1 times of 1 diameter of bearing base, and 3 outer diameter of positioning ring is 1.5-3 times of 1 diameter of bearing base.
In the present embodiment, 1 upper surface of bearing base sets at least two control handles 15, the control handle 15 It is uniformly distributed and hinged with 1 upper surface of bearing base around 1 axis of bearing base.
In the present embodiment, the bearing base 1 and positioning ring 3 and 4 corresponding position of lift drive mechanism set locating slot 16, 4 both ends of lift drive mechanism that bearing base 1 and positioning ring 3 connect respectively with 3 upper surface of 1 side end face of bearing base and positioning ring Hingedly, 4 axis of lift drive mechanism and 1 axis of bearing base are in 0 ° -90 ° angles, and 4 axis of lift drive mechanism and carrying When 1 axis of pedestal is in 90 ° of angles, lift drive mechanism 4 is in bearing groove 16.
In the present embodiment, pass through turntable mechanism, monitor station axis and lifting between the monitor station and lift drive mechanism Driving mechanism axis is in 0 ° -90 ° angles.
In the present embodiment, the turntable mechanism 13 is any one in dimensional turntable or three-dimensional turntable, and turntable machine Angular transducer 17 is set on structure, the angular transducer 17 and control circuit 12 are electrically connected.
In the present embodiment, the control circuit 12 includes data processing module, drive module, modbus fieldbus mould Block, crystal oscillating circuit module, address coding/decoding module, data cache module, wireless communication module, charge-discharge control circuit mould Block, power protecting circuit module and GPS positioning module, wherein the modbus fieldbus module respectively with crystal oscillating circuit mould Block and data cache module electrical connection, the data cache module separately respectively with data processing module, drive module, address Coding and decoding module, wireless communication module, charge-discharge control circuit module, power protecting circuit module and GPS positioning module electricity Gas connection, wherein the drive module respectively with lift drive mechanism 4, monitoring camera 6, range unit 7, headlamp 8, store Battery pack 9, photovoltaic power generation plate 10, wireless data communication antenna 11 and turntable mechanism 13 are electrically connected, the charge and discharge control Circuit module, power protecting circuit module are electrically connected with battery group 9, photovoltaic power generation plate 10 respectively, the wireless telecommunications Module and GPS positioning module are electrically connected with wireless data communication antenna 11 respectively.
The utility model in specific implementation, first according to the needs of use drives bearing base, transparent cover plate, positioning ring, lifting Motivation structure, monitor station, monitoring camera, range unit, headlamp, battery group, photovoltaic power generation plate, wireless data communication antenna And control circuit is assembled, and the utility model after assembling is then installed to inspection shaft upper surface and and inspection shaft by positioning ring Coaxial distribution, can be completed the installation of the utility model.
In carrying out practical operation operation, photovoltaic power generation is carried out by photovoltaic power generation plate first, and by the power storage of conversion It is spare in battery group, when needing to carry out switching action to well lid, there is control circuit driving to be run, is realizing to holding It carries pedestal to carry out rising opening operation and decline closed procedure, when needing to check inspection shaft inside, by control circuit Lift drive mechanism and turntable mechanism operation are driven, adjusts operating position of the monitor station in inspection shaft, while monitoring being driven to take the photograph As head, range unit, headlamp operation, under the conditions of headlamp is to inspection shaft intraoral illumination, on the one hand there is monitoring camera acquisition Continuous video information in inspection shaft is realized the purpose for continue to inspection shaft observation, is on the other hand examined by range unit Whether the height for surveying sewage etc. in inspection shaft, judge to need in current check well to carry out in dirt cleaning and inspection shaft to obtain The risk that dirt is overflowed out of inspection shaft, to rationally work out and arrange inspection shaft cleaning work plan.
In carrying out operating process, progress is carried out automatically controlling by control circuit, and in control circuit operation, a side Face carries out control signal by wireless data communication antenna and acquires remote data communication, realizes and carries out remote control to inspection shaft Purpose, reduce labor intensity, improve working efficiency, on the other hand by the GPS positioning module in control circuit to each inspection Well is positioned, convenient for accurately specifying the identification of multiple inspection shafts and work plan in large area specified.
The utility model one side structure is simple, flexible and convenient operation, and versatility is good, and it is fixed can effectively to improve the installation of well lid equipment Position, daily opening are closed the working efficiency of operation and labor intensity are effectively reduced, on the other hand integrated and high degree of automation, And there are good data communication capabilities, can effectively realize can adopt when not opening well lid to teledata is carried out in inspection shaft Collection to greatly improve the convenience and flexibility of inspection shaft current check and upkeep operation, and is improving working efficiency While reduce labor intensity and cost and simultaneously in the process of running, can effectively improve comprehensive resource utilization rate, add Big reduction equipment operation energy consumption and construction input cost, checks to further increase well lid equipment using flexible and reduce Well construction and daily management cost and labor intensity.
It should be understood by those skilled in the art that the present utility model is not limited to the above embodiments.Above-described embodiment and Only illustrate the principles of the present invention described in specification.On the premise of not departing from the spirit and scope of the utility model, The utility model also has various changes and improvements.These changes and improvements both fall within the scope of the claimed invention It is interior.The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. a kind of plastic inspection well is with exempting from opening operation well lid, it is characterised in that: plastic inspection well landscape well lid packet Include bearing base, transparent cover plate, positioning ring, lift drive mechanism, monitor station, monitoring camera, range unit, headlamp, storage Battery pack, photovoltaic power generation plate, wireless data communication antenna and control circuit, the bearing base are that cross section is in " Qian ", Upper surface and transparent cover plate are connected with each other and constitute airtight cavity structure, the photovoltaic power generation plate, wireless data communication antenna And control circuit is embedded in bearing base, wherein the photovoltaic power generation plate is coaxially distributed with bearing base, and passes through turntable Mechanism is connect with bearing base bottom, the wireless data communication antenna at least one, embedded in bearing base inner surface and ring It is evenly distributed with around bearing base axis, the battery group, control circuit are mounted on bearing base bottom by sliding rail, and are located at light It lies prostrate below power generation plate, the positioning ring is the closed hoop structure being coaxially distributed with bearing base, under being located at bearing base just It is connected with each other between Fang Bingyu bearing base by least three lift drive mechanisms, the lift drive mechanism is around carrying base Seat axis is uniformly distributed, and the monitor station is located at bearing base lower end surface and is coaxially distributed with bearing base, after the monitor station End face is connect by lift drive mechanism with bearing base lower end surface, front end face set at least one monitoring camera, at least one Range unit and several headlamps, the monitoring camera, range unit axis and monitor station axis parallelly distribute on are described Headlamp is evenly arranged on monitor station side surface around monitor station axis, and the described headlamp optical axis is parallel with monitor station axis divides Cloth, the lift drive mechanism, monitoring camera, range unit, headlamp, battery group, photovoltaic power generation plate, wireless data Communication antenna and turntable mechanism are electrically connected with control circuit.
2. a kind of plastic inspection well according to claim 1 is with exempting from opening operation well lid, it is characterised in that: the positioning Ring internal diameter is 0.5-1.1 times of bearing base diameter, and positioning ring outer diameter is 1.5-3 times of bearing base diameter.
3. a kind of plastic inspection well according to claim 1 is with exempting from opening operation well lid, it is characterised in that: the carrying Pedestal upper surface sets at least two control handles, the control handle it is uniformly distributed around bearing base axis and on bearing base End face is hinged.
4. a kind of plastic inspection well according to claim 1 is with exempting from opening operation well lid, it is characterised in that: the carrying Pedestal and positioning ring and lift drive mechanism corresponding position set locating slot, the lift drive mechanism that bearing base is connected with positioning ring Both ends are hinged with bearing base side end face and positioning ring upper surface respectively, and lift drive mechanism axis is in bearing base axis 0 ° -90 ° angles, and when lift drive mechanism axis and bearing base axis are in 90 ° of angles, lift drive mechanism is embedded in carrying In slot.
5. a kind of plastic inspection well according to claim 1 is with exempting from opening operation well lid, it is characterised in that: the detection By turntable mechanism between platform and lift drive mechanism, monitor station axis and lift drive mechanism axis are in 0 ° -90 ° angles.
6. a kind of plastic inspection well is with exempting from opening operation well lid according to claim 1 or 5, it is characterised in that: described Turntable mechanism is any one in dimensional turntable or three-dimensional turntable, and angular transducer is set on turntable mechanism, the angle Sensor and control circuit are electrically connected.
7. a kind of plastic inspection well according to claim 1 is with exempting from opening operation well lid, it is characterised in that: the control Circuit includes data processing module, drive module, modbus fieldbus module, crystal oscillating circuit module, address coding/decoding mould Block, data cache module, wireless communication module, charge-discharge control circuit module, power protecting circuit module and GPS positioning mould Block, wherein the modbus fieldbus module is electrically connected with crystal oscillating circuit module and data cache module respectively, it is described Data cache module separately respectively with data processing module, drive module, address coding/decoding module, data cache module, nothing Line communication module, charge-discharge control circuit module, power protecting circuit module and GPS positioning module electrical connection, wherein described Drive module respectively with lift drive mechanism, monitoring camera, range unit, headlamp, battery group, photovoltaic power generation plate, Wireless data communication antenna and turntable mechanism electrical connection, the charge-discharge control circuit module, power protecting circuit module Be electrically connected respectively with battery group, photovoltaic power generation plate, the wireless communication module and GPS positioning module respectively with no line number It is electrically connected according to communication antenna.
CN201820841090.0U 2018-06-01 2018-06-01 A kind of plastic inspection well is with exempting from opening operation well lid Active CN208266926U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820841090.0U CN208266926U (en) 2018-06-01 2018-06-01 A kind of plastic inspection well is with exempting from opening operation well lid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820841090.0U CN208266926U (en) 2018-06-01 2018-06-01 A kind of plastic inspection well is with exempting from opening operation well lid

Publications (1)

Publication Number Publication Date
CN208266926U true CN208266926U (en) 2018-12-21

Family

ID=64688140

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820841090.0U Active CN208266926U (en) 2018-06-01 2018-06-01 A kind of plastic inspection well is with exempting from opening operation well lid

Country Status (1)

Country Link
CN (1) CN208266926U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110581478A (en) * 2019-08-22 2019-12-17 广东电网有限责任公司 New-type cable trench cover with automatic illumination function
CN114319452A (en) * 2022-01-21 2022-04-12 伟志股份公司 Automatic well lid detection device and method based on AI identification

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110581478A (en) * 2019-08-22 2019-12-17 广东电网有限责任公司 New-type cable trench cover with automatic illumination function
CN114319452A (en) * 2022-01-21 2022-04-12 伟志股份公司 Automatic well lid detection device and method based on AI identification
CN114319452B (en) * 2022-01-21 2023-08-11 伟志股份公司 Automatic well lid detection device and method based on AI identification

Similar Documents

Publication Publication Date Title
CN208266926U (en) A kind of plastic inspection well is with exempting from opening operation well lid
CN208586725U (en) A kind of intelligence plastic inspection well
CN211667740U (en) Street lamp for urban road with power generation facility and be convenient for transportation
CN206626353U (en) A kind of remote auto observation device
CN210532257U (en) Energy-saving monitoring equipment for lighting device
CN208999413U (en) Macromolecule ECOLOGICAL ENVIRONMENTAL MONITORING buoyage
CN208981301U (en) A kind of collecting refuse from open water device
CN206708868U (en) A kind of LED underground lamps being easy to install and maintain
CN211475785U (en) Intelligent control solar street lamp
CN210923666U (en) A water quality monitoring device for water conservancy survey and drawing
CN210797648U (en) Multi-functional intelligent well lid
CN113443087A (en) Unmanned aerial vehicle and unmanned ship lake surface rubbish cleaning device in coordination
CN218067923U (en) Water quality on-line monitoring buoy convenient to maintain
CN112482442A (en) Intelligent well lid
CN213027952U (en) Real-time monitoring device of intelligent photovoltaic equipment
CN207316771U (en) A kind of lithium ion solar street light with sunshade and locomotive function
CN206972445U (en) One kind installation blower fan multi-functional apparatus
CN206686419U (en) A kind of control system of solar energy street lamp based on STM32 and ZigBee
CN211902672U (en) Solar photovoltaic LED street lamp with traffic indication function
CN211365774U (en) Waste battery recovery device
CN214038209U (en) Lithium battery solar energy thing networking multifunctional street lamp
CN217010438U (en) Wireless charging pile based on highway inspection robot
CN216521372U (en) New forms of energy street lamp convenient to high-efficient installation
CN212618017U (en) Multifunctional LED street lamp
CN215926078U (en) Multifunctional urban road inspection well cover

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant