CN107453697A - It is a kind of can automated cleaning photovoltaic bracket - Google Patents
It is a kind of can automated cleaning photovoltaic bracket Download PDFInfo
- Publication number
- CN107453697A CN107453697A CN201710894230.0A CN201710894230A CN107453697A CN 107453697 A CN107453697 A CN 107453697A CN 201710894230 A CN201710894230 A CN 201710894230A CN 107453697 A CN107453697 A CN 107453697A
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- Prior art keywords
- rotation seat
- cleaning
- photovoltaic bracket
- drive
- automated cleaning
- 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.)
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- 238000004140 cleaning Methods 0.000 title claims abstract description 65
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 239000011521 glass Substances 0.000 claims abstract description 5
- 230000033001 locomotion Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 5
- 238000005286 illumination Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241000127225 Enceliopsis nudicaulis Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
- F24S30/42—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis
- F24S30/425—Horizontal axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S2030/10—Special components
- F24S2030/13—Transmissions
- F24S2030/134—Transmissions in the form of gearings or rack-and-pinion transmissions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses it is a kind of can automated cleaning photovoltaic bracket, including stand, rotation seat, circular arc frame, drive device, illuminance transducer, transmission mechanism, transmission switching device and cleaning device；Rotation seat is rotatablely installed in stand, and circular arc frame is installed on the side or bottom of rotation seat, and its center of circle is conllinear with the center of rotation of rotation seat；Cleaning device is installed on rotation seat so that its cleaning brush cleans to photovoltaic plate surface, and illuminance transducer, which is installed on rotation seat, to be used to detect light intensity, and its top is provided with the glass plate with photovoltaic panel flush；Drive device is installed in stand, and the output end of drive device is connected to drive rotation seat to rotate by transmission mechanism with circular arc frame, while is connected by being driven switching device with cleaning device to drive cleaning brush to be moved along the surface of photovoltaic panel.The device have the advantages that：Automated cleaning can be realized using the original driving power source of support is tracked.
Description
Technical field
The invention belongs to technical field of photovoltaic power generation, and in particular to it is a kind of can automated cleaning photovoltaic bracket.
Background technology
The focus that solar energy is paid attention to its exclusive advantage and as people.Abundant solar radiant energy is important energy
Source, it is the energy that inexhaustible, nexhaustible, pollution-free, the cheap, mankind can freely utilize.Solar energy reaches each second
The energy on ground is up to 800,000 kilowatt hours, if the solar energy of earth surface 0.1% is switched to electric energy, number turnover 5% is annual to generate electricity
Amount is up to 5.6 × 1012 kilowatt-hours, equivalent to 40 times of energy consumption in the world.Just because of these unique advantages of solar energy,
After the 1980s, the species of solar cell is on the increase, application is increasingly wide, market scale also progressively expands.
After the 1990s, photovoltaic generation is fast-developing, by 2006, has built up more than 10 MW class in the world
Photovoltaic generating system, the networking photovoltaic plant of 6 MW class.The U.S. is the country of the earliest development plan for formulating photovoltaic generation.
" million roofs " plan is proposed again within 1997.Japan starts new sunlight program in 1992, the Japanese photovoltaic module life by 2003
The 50% of the Chan Zhan worlds, 10 large manufacturers have 4 in Japan before the world.And the new Renewable Energy Law of Germany is defined on photovoltaic generation
Net electricity price, has promoted photovoltaic market and industry development significantly, Germany is turned into world's photovoltaic generation after Japan with fastest developing speed
Country.The states such as Switzerland, France, Italy, Spain, Finland, photovoltaic development plan is also formulated one after another, and throw huge fund and carry out skill
Art is developed and accelerates process of industrialization.
China human mortality is numerous, vast in territory, energy shortage, thus solar energy generation technology be especially suitable for China national conditions from
And turn into currently the most important new energy.In order to improve generated energy, photovoltaic panel is arranged in by support by big density, large area
Condition is suitably regional.Among one day, change that the position of the sun can be over time and change, therefore direct projection is to photovoltaic panel
On sunray angle it is also different, the generated energy that this results in photovoltaic panel under different irradiating angles is also different, thus in order to
Can improve Generation Rate, current photovoltaic board mount can track sun's motion track, the moment change the posture of oneself from
And the angular illumination that can be more suitable for sunlight is in plate face.In order to solve generating efficiency, existing many enterprises have developed not
With tracking support, so as to reaching optimal by way of making photovoltaic panel change posture automatically with the change in location of the sun
Irradiating angle.But during long-time use, due to wind and weather, cause the surface of photovoltaic panel can leave stain, largely
Stain generated energy can be caused to decline, influence the normal operation of photovoltaic panel.
The content of the invention
It is an object of the invention to overcome deficiency of the prior art, there is provided it is a kind of can automated cleaning photovoltaic bracket, energy
Automated cleaning enough can be realized using the original driving power source of support is tracked.
For solve prior art problem, the invention discloses it is a kind of can automated cleaning photovoltaic bracket, including stand, rotate
Seat, circular arc frame, drive device, illuminance transducer, transmission mechanism, transmission switching device and cleaning device；
Rotation seat is rotatablely installed in stand, and circular arc frame is installed on turn of the side or bottom of rotation seat, its center of circle and rotation seat
Dynamic center is conllinear；Cleaning device is installed on rotation seat so that its cleaning brush cleans to photovoltaic plate surface, and illumination senses
Device, which is installed on rotation seat, to be used to detect light intensity, and its top is provided with the glass plate with photovoltaic panel flush；Driving dress
Put and be installed in stand, the output end of drive device is connected to drive rotation seat to rotate by transmission mechanism with circular arc frame, simultaneously
It is connected by being driven switching device with cleaning device to drive cleaning brush to be moved along the surface of photovoltaic panel.
Preferably, transmission mechanism includes driving pulley, driven pulley, timing belt, short axle and roller；
Driving pulley is installed in the output end of drive device, and driven pulley and roller are mounted in short axle, timing belt and master
Movable belt pulley connects with driven pulley, and roller is in contact with the periphery of circular arc frame.
Preferably, transmission mechanism includes driving pulley, driven pulley, timing belt, short axle and gear；
Driving pulley is installed in the output end of drive device, and driven pulley and roller are mounted in short axle, timing belt and master
Movable belt pulley connects with driven pulley, and the gear teeth on gear is cylindrical with circular arc frame are meshed.
Preferably, cleaning device includes leading screw, balladeur train, guide rod and brush holder；
Leading screw is rotatablely installed on rotation seat, and guide rod is installed on rotation seat, and balladeur train is formed with leading screw and is threadedly coupled, and balladeur train is with leading
Bar is formed and is slidably connected, and one end of leading screw connects the output end of drive device by being driven switching device, and brush holder is installed on balladeur train
On, cleaning brush is installed on brush holder.
Preferably, cleaning device also includes spring and guide pillar, and guide pillar is vertically installed on cleaning brush, set on brush holder
The through hole for the guide pillar that is slidably installed is equipped with, spring housing is on guide pillar so that cleaning brush forms elastic connection with brush holder.
Preferably, the side end set of rotation seat has voussoir, and one end of cleaning brush is provided with a protuberance, prominent
Cleaning brush is driven to move up and down when being moved along the inclined-plane of voussoir in portion.
Preferably, drive device is stepper motor.
Preferably, it is electromagnetic clutch to be driven switching device.
Preferably, rotation seat is rectangle structure.
Preferably, the number of illuminance transducer is two, and is symmetrical arranged on the length direction of rotation seat.
The device have the advantages that：Be able to can utilize track the original driving power source of support realize it is automatic clear
It is clean.
Brief description of the drawings
Fig. 1 is a preferred embodiment of the invention structural perspective；
Fig. 2 is the structural representation of cleaning device in embodiment illustrated in fig. 1；
Fig. 3 is the partial enlarged drawing of transmission mechanism in embodiment illustrated in fig. 1.
Reference：
1 stand；2 rotation seats；3 guide rods；4 leading screws；Drive device；6 balladeur trains；7 circular arc framves；8 driving pulleys；9 timing belts；10 is driven
Belt wheel；11 short axles；12 rollers；13 brush holders；14 voussoirs；15 transmission switching devices；16 guide pillars；17 springs；18 cleaning brush；18.1 is prominent
Go out portion.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
As shown in Figures 1 to 3, it is a kind of can automated cleaning photovoltaic bracket, including stand 1, rotation seat 2, circular arc frame 7, driving
Device 5, illuminance transducer, transmission mechanism, transmission switching device 15 and cleaning device.
Rotation seat 2 is rotatablely installed in stand 1, and circular arc frame 7 is installed on the side or bottom of rotation seat 2, and its center of circle is with turning
The center of rotation of dynamic seat 2 is conllinear.Cleaning device is installed on rotation seat 2 so that its cleaning brush 18 is carried out clearly to photovoltaic plate surface
Clean, illuminance transducer, which is installed on rotation seat 2, to be used to detect light intensity, and its top is provided with the glass with photovoltaic panel flush
Glass plate.Drive device 5 is installed in stand 1, and the output end of drive device 5 is connected to drive by transmission mechanism with circular arc frame 7
Rotation seat 2 rotates, while is connected by being driven switching device 15 with cleaning device to drive surface of the cleaning brush 18 along photovoltaic panel
It is mobile.
Preferably, transmission mechanism includes driving pulley 8, driven pulley 10, timing belt 9, short axle 11 and roller 12.
Driving pulley 8 is installed in the output end of drive device 5, and driven pulley 10 and roller 12 are mounted on short axle 11
On, timing belt 9 is connected with driving pulley 8 and driven pulley 10, and roller 12 is in contact with the periphery of circular arc frame 7.
As the equivalent preferred scheme of another kind, transmission mechanism includes driving pulley 8, driven pulley 10, timing belt 9, short axle
11 and gear.
Driving pulley 8 is installed in the output end of drive device 5, and driven pulley 10 and roller 12 are mounted on short axle 11
On, timing belt 9 is connected with driving pulley 8 and driven pulley 10, and the gear teeth on gear is cylindrical with circular arc frame 7 are meshed.
Preferably, cleaning device includes leading screw 4, balladeur train 6, guide rod 3 and brush holder 13.
Leading screw 4 is rotatablely installed on rotation seat 2, and guide rod 3 is installed on rotation seat 2, and balladeur train 6 forms screw thread with leading screw 4 and connected
Connect, balladeur train 6 is formed with guide rod 3 and is slidably connected, and one end of leading screw 4 connects the output of drive device 5 by being driven switching device 15
End, brush holder 13 are installed on balladeur train 6, and cleaning brush 18 is installed on brush holder 13.
Preferably, cleaning device also includes spring 17 and guide pillar 16, and guide pillar 16 is vertically installed on cleaning brush 18,
The through hole for the guide pillar 16 that is slidably installed is provided with brush holder 13, spring 17 is sheathed on guide pillar 16 so that cleaning brush 18 and brush holder 13
Form elastic connection.
Preferably, the side end set of rotation seat 2 has voussoir 14, and one end of cleaning brush 18 is provided with a protuberance
18.1, inclined-plane of the protuberance 18.1 along voussoir 14 drives cleaning brush 18 to move up and down when moving.When cleaning brush 18 is moved to end
When moved up along voussoir 14 so that cleaning brush 18 depart from photovoltaic plate surface.
Preferably, drive device 5 is stepper motor.
Preferably, it is electromagnetic clutch to be driven switching device 15.
Preferably, rotation seat 2 is rectangle structure.
Preferably, the number of illuminance transducer is two, and is symmetrically set on the length direction of rotation seat 2
Put.
When retaining more stain in photovoltaic panel, the detected value of illuminance transducer can be influenceed, when detected value is less than the same period
Can be assumed that superficial stain is more during certain setting value needs to clear up, and now electromagnetic clutch, which combines, makes drive device 5 drive rotation
Seat 2 also drives cleaning brush 18 in the movement of photovoltaic plate surface so as to realize automated cleaning while rotation.Due among 1 year, no
Intensity of illumination of the same period has a larger difference, therefore can be after the use according to one section of long period, according to actually detected value
The adjustment of setting value is carried out, so as to more accurately judge whether to need to clean.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. it is a kind of can automated cleaning photovoltaic bracket, it is characterised in that：Including stand（1）, rotation seat（2）, circular arc frame（7）, drive
Dynamic device（5）, illuminance transducer, transmission mechanism, transmission switching device（15）And cleaning device；
The rotation seat（2）It is rotatablely installed in the stand（1）On, the circular arc frame（7）It is installed on the rotation seat（2）One
Side or bottom, its center of circle and the rotation seat（2）Center of rotation it is conllinear；The cleaning device is installed on the rotation seat（2）
Above so that its cleaning brush（18）Photovoltaic plate surface is cleaned, the illuminance transducer is installed on the rotation seat（2）On
For detecting light intensity, its top is provided with the glass plate with photovoltaic panel flush；The drive device（5）It is installed on institute
State stand（1）On, the drive device（5）Output end pass through the transmission mechanism and the circular arc frame（7）Connect to drive
The rotation seat（2）Rotate, while pass through the transmission switching device（15）It is connected with the cleaning device described clear to drive
Clean brush（18）Moved along the surface of photovoltaic panel.
2. it is according to claim 1 it is a kind of can automated cleaning photovoltaic bracket, it is characterised in that：The transmission mechanism includes
Driving pulley（8）, driven pulley（10）, timing belt（9）, short axle（11）And roller（12）；
The driving pulley（8）It is installed on the drive device（5）Output end on, the driven pulley（10）With the roller
（12）It is mounted on the short axle（11）On, the timing belt（9）With the driving pulley（8）With the driven pulley（10）Even
Connect, the roller（12）With the circular arc frame（7）Periphery be in contact.
3. it is according to claim 1 it is a kind of can automated cleaning photovoltaic bracket, it is characterised in that：The transmission mechanism includes
Driving pulley（8）, driven pulley（10）, timing belt（9）, short axle（11）And gear；
The driving pulley（8）It is installed on the drive device（5）Output end on, the driven pulley（10）With the roller
（12）It is mounted on the short axle（11）On, the timing belt（9）With the driving pulley（8）With the driven pulley（10）Even
Connect, the gear and the circular arc frame（7）The gear teeth on cylindrical are meshed.
4. it is according to claim 1 it is a kind of can automated cleaning photovoltaic bracket, it is characterised in that：The cleaning device includes
Leading screw（4）, balladeur train（6）, guide rod（3）And brush holder（13）；
The leading screw（4）It is rotatablely installed in the rotation seat（2）On, the guide rod（3）It is installed on the rotation seat（2）On, institute
State balladeur train（6）With the leading screw（4）Form threaded connection, the balladeur train（6）With the guide rod（3）Composition is slidably connected, described
Leading screw（4）One end pass through the transmission switching device（15）Connect the drive device（5）Output end, the brush holder（13）
It is installed on the balladeur train（6）On, the cleaning brush（18）It is installed on the brush holder（13）On.
5. it is according to claim 4 it is a kind of can automated cleaning photovoltaic bracket, it is characterised in that：The cleaning device also wraps
Include spring（17）And guide pillar（16）, the guide pillar（16）It is vertically installed in the cleaning brush（18）On, the brush holder（13）On set
It is equipped with the guide pillar that is slidably installed（16）Through hole, the spring（17）It is sheathed on the guide pillar（16）Above so that the cleaning
Brush（18）With the brush holder（13）Form elastic connection.
6. it is according to claim 5 it is a kind of can automated cleaning photovoltaic bracket, it is characterised in that：The rotation seat（2）'s
Side end set has voussoir（14）, the cleaning brush（18）One end be provided with a protuberance（18.1）, the protuberance
（18.1）Along the voussoir（14）Inclined-plane movement when drive the cleaning brush（18）Move up and down.
7. it is according to claim 1 it is a kind of can automated cleaning photovoltaic bracket, it is characterised in that：The drive device（5）
For stepper motor.
8. it is according to claim 1 it is a kind of can automated cleaning photovoltaic bracket, it is characterised in that：The transmission switching device
（15）For electromagnetic clutch.
9. it is according to claim 1 it is a kind of can automated cleaning photovoltaic bracket, it is characterised in that：The rotation seat（2）For
Rectangle structure.
10. it is according to claim 9 it is a kind of can automated cleaning photovoltaic bracket, it is characterised in that：The illuminance transducer
Number be two, and in the rotation seat（2）Length direction on be symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710894230.0A CN107453697A (en) | 2017-10-24 | 2017-10-24 | It is a kind of can automated cleaning photovoltaic bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710894230.0A CN107453697A (en) | 2017-10-24 | 2017-10-24 | It is a kind of can automated cleaning photovoltaic bracket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107453697A true CN107453697A (en) | 2017-12-08 |
Family
ID=60497636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710894230.0A Withdrawn CN107453697A (en) | 2017-10-24 | 2017-10-24 | It is a kind of can automated cleaning photovoltaic bracket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107453697A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931256A (en) * | 2017-12-20 | 2018-04-20 | 无锡特恒科技有限公司 | Rubber roller dedusting mechanism |
| CN109088592A (en) * | 2018-07-09 | 2018-12-25 | 俞友航 | A kind of multifuctional solar photovoltaic power generation apparatus |
| CN109622435A (en) * | 2018-12-16 | 2019-04-16 | 彭伶铭 | A kind of solar panel electric power network dust-extraction unit |
| CN110549669A (en) * | 2019-10-22 | 2019-12-10 | 深圳市华阳通达精密机械有限公司 | Translation cleaning and scraping device |
-
2017
- 2017-10-24 CN CN201710894230.0A patent/CN107453697A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931256A (en) * | 2017-12-20 | 2018-04-20 | 无锡特恒科技有限公司 | Rubber roller dedusting mechanism |
| CN109088592A (en) * | 2018-07-09 | 2018-12-25 | 俞友航 | A kind of multifuctional solar photovoltaic power generation apparatus |
| CN109622435A (en) * | 2018-12-16 | 2019-04-16 | 彭伶铭 | A kind of solar panel electric power network dust-extraction unit |
| CN110549669A (en) * | 2019-10-22 | 2019-12-10 | 深圳市华阳通达精密机械有限公司 | Translation cleaning and scraping device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171208 |
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| WW01 | Invention patent application withdrawn after publication |