CN111404477A - Photovoltaic board cleans machine people - Google Patents
Photovoltaic board cleans machine people Download PDFInfo
- Publication number
- CN111404477A CN111404477A CN202010293344.1A CN202010293344A CN111404477A CN 111404477 A CN111404477 A CN 111404477A CN 202010293344 A CN202010293344 A CN 202010293344A CN 111404477 A CN111404477 A CN 111404477A
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- Prior art keywords
- gear
- photovoltaic panel
- shaft
- adjacent
- cleaning robot
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- 238000004140 cleaning Methods 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims description 4
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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- 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
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/10—Cleaning arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cleaning In General (AREA)
- Photovoltaic Devices (AREA)
- Manipulator (AREA)
Abstract
The invention discloses a photovoltaic panel cleaning robot, which comprises: the device comprises a shell, a walking shaft, a walking wheel, an upper change gear and a roller brush shaft; the upper and lower sides of the casing are respectively provided with a containing chamber, the walking shaft, the walking wheel and the roller brush shaft are arranged below the middle part of the casing, the upper change gear is rotatably arranged below one of the containing chambers, the axis of the upper change gear is vertical to the axis of the walking wheel, one of the containing chambers is internally provided with a first speed reduction motor with two output shafts, the output shafts are respectively provided with a main gear, one end of a pivoting shaft of the walking wheel penetrates into one of the containing chambers and is provided with a first driven gear, one end of a pivoting shaft of the upper change gear penetrates into one of the containing chambers and is provided with a second driven gear, the main gear of each output shaft is respectively meshed with and linked with the adjacent first driven gear and a second driven gear, the other containing chamber is internally provided with a second speed reduction motor, and the second speed reduction motor drives the roller brush shaft to rotate.
Description
Technical Field
The invention relates to the technical field of photovoltaic panel cleaning devices, in particular to a photovoltaic panel cleaning robot.
Background
A photovoltaic panel, also called Solar panel, is an assembly of a plurality of Solar modules assembled on a plate in a certain way, usually as a unit of a photovoltaic array.
With the deterioration of energy crisis and the enhancement of environmental awareness, people pay more and more attention to clean energy, and the application of solar cells as the mature clean energy at present has become a research hotspot in the energy field. Solar cells utilize photovoltaic panels to convert photons of solar radiation into electrical energy through semiconductor materials. Along with the increase of service time, the photovoltaic board can be stained with dust, debris etc. inevitably, influences the generating efficiency of photovoltaic board to in order to clean the photovoltaic board, the photovoltaic board cleans the robot by oneself.
The existing photovoltaic panel cleaning robot is generally provided with an upper hanging wheel below the upper side of a machine shell and a travelling wheel below the middle part of the machine shell, the upper hanging wheel is utilized to travel on the side surface of a photovoltaic panel, and the photovoltaic panel is generally arranged in an inclined manner, so that the photovoltaic panel cleaning robot can be suspended and supported on the photovoltaic panel through the upper hanging wheel; can make the photovoltaic board clean the robot through the walking wheel and can walk on the photovoltaic board, the last peg wheel that current photovoltaic board cleaned the robot is driven by a motor, and the walking wheel is driven by another motor again to too much motor setting makes current photovoltaic board clean the robot and has whole bulky, with high costs and the high defect of probability of breaking down.
In view of the above, the present inventors have made extensive studies and intensive studies to solve the above problems, and as a result, the present invention has been developed and designed.
Disclosure of Invention
The invention aims to provide a photovoltaic panel cleaning robot which is small in overall size, low in cost, light in weight and low in failure probability.
In order to achieve the purpose, the technical solution of the invention is as follows:
a photovoltaic panel cleaning robot comprising: the device comprises a shell, a walking shaft, a walking wheel, an upper change gear and a roller brush shaft; the upper side and the lower side of the shell are respectively provided with a containing chamber, the travelling wheels are linked with travelling shafts, the travelling wheels and the roller brush shaft are arranged below the middle part of the shell, the travelling wheels are arranged adjacent to the containing chambers, the upper change gear is rotatably arranged below one of the containing chambers, the axis of the upper change gear is vertical to the axis of the travelling wheels, wherein a first speed reducing motor with two output shafts is arranged in one chamber, the output shafts are provided with a main gear, one end of a pivot shaft of the travelling wheel penetrates into one of the containing chambers and is provided with a first driven gear, one end of a pivot shaft of the upper change gear penetrates into one of the containing chambers and is provided with a second driven gear, a main gear of each output shaft is respectively meshed and linked with the adjacent first driven gear and the adjacent second driven gear, and a second speed reducing motor is arranged in the other containing chamber and drives the roller brush shaft to rotate.
The number of the main gear of each output shaft is one, the main gear of each output shaft is respectively meshed and interlocked with the adjacent second driven gear, and the second driven gear is meshed and interlocked with the adjacent first driven gear.
The number of the main gears of each output shaft is two, one main gear of each output shaft is respectively meshed with and interlocked with the adjacent second driven gears, and the other main gear of each output shaft is respectively meshed with and interlocked with the adjacent first driven gears.
The utility model provides a photovoltaic board cleans machine people still includes lower change gear, another below of holding room is rotationally located to lower change gear, the axis of change gear is perpendicular with the axis of walking wheel down.
At least the left side or the right side that each holds the room are equipped with a supporting seat to the epirelief, the supporting seat all is equipped with a rotatable auxiliary idle wheel, it sets up side by side with adjacent walking wheel interval to assist the idle wheel, the bottom of walking wheel is greater than the bottom of assisting the idle wheel and is apart from the bottom surface distance of casing.
The supporting seat is convexly arranged on the left side and the right side of each accommodating chamber.
The travelling wheels, the upper change gear and the auxiliary idle wheels can be respectively connected with bearing seats.
A support is fixedly arranged below one accommodating chamber downwards, and at least one anti-falling wheel for being clamped at the bottom of the photovoltaic panel is arranged on the support.
A limiting frame for clamping the bottom of the photovoltaic panel is fixedly arranged downwards below the other accommodating chamber.
And a sheet metal part is fixedly arranged between the main gear and the first speed reducing motor and between the first driven gear and the adjacent wall surface of the accommodating chamber.
After the scheme is adopted, the first speed reducing motor is provided with the structural design that the two output shafts are matched with the output shafts to be provided with the main gears, the travelling wheels are provided with the first driven gears, the upper change gear is provided with the second driven gear, and the main gear of each output shaft is respectively meshed with and linked with the adjacent first driven gear and the second driven gear, so that the first speed reducing motor can not only be linked with the travelling wheels to rotate, but also be linked with the upper change gear to rotate, the number of motors in the photovoltaic panel cleaning robot is reduced, and the photovoltaic panel cleaning robot is small in overall size, light in weight, low in cost and low in failure probability.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of an embodiment of the present invention with a portion broken away;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a partial perspective view of a first embodiment of the present invention;
FIG. 5 is a partially exploded view of FIG. 4;
FIG. 6 is an exploded view of the roll brush shaft and second reduction motor of the present invention;
FIG. 7 is a perspective view of the present invention with the travel axle and wheels assembled;
FIG. 8 is a cross-sectional view of the roll brush shaft of the present invention assembled with a second reduction motor;
FIG. 9 is a cross-sectional view of FIG. 7;
FIG. 10 is a partial perspective view of a second embodiment of the present invention;
fig. 11 is a partially enlarged view of fig. 10 at B.
[ notation ] to show
The chamber 11, the first speed reducing motor 12 and the second speed reducing motor 13
Traveling shaft 2
The first slave gear 31 is connected with the pin 33 joint 34 through the sleeve 32
Connecting head 51, bolt 52, nut 53 and connecting rod 54
Bolt 55
Supporting seat 7
Limiting frame 10
A bearing housing 02.
Detailed Description
To achieve the above objects and advantages, the present invention provides a novel and improved technical means and structure, which will be described in detail in connection with the preferred embodiments of the present invention.
Referring to fig. 1 to 11, the present invention discloses a photovoltaic panel cleaning robot, including: the device comprises a shell 1, a walking shaft 2, walking wheels 3, an upper change gear 4 and a roller brush shaft 5; the upper side and the lower side of the casing 1 are respectively provided with a containing chamber 11, the walking wheels 3 are linked with the walking shafts 2, the walking wheels 3 and the roller brush shafts 5 are arranged below the middle part of the casing 1, the walking wheels 3 are arranged adjacent to the containing chambers 11, the upper change gear 4 is rotatably arranged below one of the containing chambers 11, the axis of the upper change gear 4 is vertical to the axis of the walking wheels 3, one of the containing chambers 11 is internally provided with a first reducing motor 12 with two output shafts, the output shafts are respectively provided with a main gear 121, one end of a pivoting shaft of the walking wheels 3 penetrates into one of the containing chambers 11 and is provided with a first driven gear 31, one end of a pivoting shaft of the upper change gear 4 penetrates into one of the containing chambers 11 and is provided with a second driven gear 41, the main gear 121 of each output shaft is respectively meshed with the adjacent first driven gear 31 and the second driven gear 41, the other containing chamber 11 is internally provided with a second reducing motor 13, the second reduction motor 13 drives the roller brush shaft 5 to rotate, wherein a power supply or other control components for supplying power to the first reduction motor 12 and the second reduction motor 13 can be accommodated in the casing 1, the first reduction motor 12 and the second reduction motor 13 can also be directly electrically connected with an external power supply, and the casing 1 is a known structure in the field and is not described herein.
The first and second embodiments of the present invention differ in the manner in which the main gear 121 meshes with the adjacent first and second slave gears 31 and 41: in the first embodiment, the number of the master gears 121 of each output shaft is one, the master gear 121 of each output shaft is respectively meshed with and interlocked with the adjacent second slave gears 41, the second slave gears 41 are meshed and interlocked with the adjacent first slave gears 31, so that the master gears 121 are respectively meshed and interlocked with the adjacent first slave gears 31 and the adjacent second slave gears 41; in the second embodiment, the number of the master gears 121 of each output shaft is two, one master gear 121 of each output shaft is respectively meshed and interlocked with the adjacent second slave gears 41, and the other master gear 121 of each output shaft is respectively meshed and interlocked with the adjacent first slave gears 31, so that the master gears 121 are respectively meshed and interlocked with the adjacent first slave gears 31 and the adjacent second slave gears 41.
In order to enable the photovoltaic panel cleaning robot to move smoothly on the photovoltaic panel, the photovoltaic panel cleaning robot further comprises a non-driven lower change gear 6, the lower change gear 6 is rotatably arranged below the other accommodating chamber 11, and the axis of the lower change gear 6 is perpendicular to the axis of the travelling wheel 3.
Furthermore, at least the left side or the right side of each accommodating chamber 11 can be outwards convexly provided with a supporting seat 7, the supporting seats 7 are respectively provided with a rotatable auxiliary idle wheel 8, the auxiliary idle wheels 8 and the adjacent walking wheels 3 are arranged side by side at intervals, the distance from the bottom of each walking wheel 3 to the bottom surface of the casing 1 can be larger than the distance from the bottom of each auxiliary idle wheel 8 to the bottom surface of the casing 1, in the embodiment, the supporting seat 7 is outwards convexly arranged on the left side and the right side of each accommodating chamber 11, so that the photovoltaic panel cleaning robot disclosed by the invention can smoothly cross gaps between the photovoltaic panels.
When the walking wheel 3 moves to the gap between two photovoltaic panels, the auxiliary idler 8 on one side can firstly span the gap between the photovoltaic panels to the next photovoltaic panel before the walking wheel 3, when one walking wheel 3 walks to the gap, the other walking wheel 3 and the auxiliary idler 8 supported on the next photovoltaic panel can provide support, the one walking wheel 3 smoothly passes through the gap, the other walking wheel 3 passes through the gap in the same way as the one walking wheel 3, the auxiliary idler 8 on the other side passes through the gap in the same way as the auxiliary idler 8 on one side, and therefore the walking wheel 3 cannot be clamped into the gap when moving to the gap between the photovoltaic panels.
Then, a support 9 can be fixedly arranged below one of the chambers 11, at least one anti-falling wheel 91 for being clamped at the bottom of the photovoltaic panel is arranged on the support 9, and a limiting frame 10 for being clamped at the bottom of the photovoltaic panel can be fixedly arranged below the other chamber 11, so that the photovoltaic panel cleaning robot can be prevented from being blown away from the photovoltaic panel and even falling down by the aid of the limiting frame 10 and the anti-falling wheel 91.
Further, a sheet metal part 01 is fixedly arranged between the main gear 121 and the first speed reduction motor 12 and between the first driven gear 31 and the adjacent wall surface of the accommodating chamber 11, so that the stress strength of the wall surface of the accommodating chamber 11 and the first speed reduction motor 12 is improved.
And secondly, the travelling wheels 3, the upper change gear 4 and the auxiliary idle wheels 8 can be respectively connected with bearing seats 02.
Further, a shaft sleeve 32 is arranged on a pivoting shaft sleeve 32 of the travelling wheel 3, a connecting pin 33 penetrates through the shaft sleeve 32 and the pivoting shaft, the width of the connecting pin 33 along the axial direction of the pivoting shaft is smaller than the axial width of a hole in the pivoting shaft, through which the connecting pin 33 penetrates, so that the travelling wheel 2 can swing within a certain angle to enable the travelling wheel 3 to adapt to uneven road surfaces, the structure is simple, the travelling shaft 2 is hollow, the weight of the roller brush is reduced, a connector 34 is welded at the end part of the travelling shaft 2, the strength of the travelling shaft 2 is improved by using the connector 34, the shaft sleeve 32 is sleeved with the connector 34 of the adjacent travelling shaft 2, a positioning bolt 35 penetrates through the connector 34 for connecting the fixed shaft sleeve 32 and the travelling shaft 2, a connector 51 is respectively inserted into the end part of the roller brush shaft 5, the connector 51 is connected with the roller brush shaft 5 by a bolt 52 matched with a nut 53, the bolt 52 can move in the connector 51 along the axial direction of the roller brush, the connecting head 51 adjacent to the second speed reducing motor 13 is connected with the output shaft of the second speed reducing motor 13, and the other connecting head 51 is fixedly connected with the connecting rod 54 on the bearing seat 02 arranged on the wall surface of the adjacent accommodating chamber 11 through the bolt body 55, so that the whole device is convenient to disassemble and assemble.
Therefore, according to the invention, through the structural design that the first speed reduction motor 12 is provided with two output shafts matched with the output shafts and provided with the main gear 121, the travelling wheels 3 are provided with the first driven gear 31, and the upper change gear 4 is provided with the second driven gear 41, the main gear 121 of each output shaft is respectively meshed and linked with the adjacent first driven gear 31 and the second driven gear 41, so that the first speed reduction motor 12 not only can link the travelling wheels 3 to rotate, but also can link the upper change gear 4 to rotate, and therefore, the number of motors in the photovoltaic panel cleaning robot is reduced, and the photovoltaic panel cleaning robot is small in overall size, light in weight, low in cost and low in failure probability.
While the invention has been described with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should not be limited to the embodiments disclosed, but includes various alternatives and modifications without departing from the present invention, which are encompassed by the claims.
Claims (10)
1. A photovoltaic panel cleaning robot, comprising: the device comprises a shell, a walking shaft, a walking wheel, an upper change gear and a roller brush shaft; the upper side and the lower side of the shell are respectively provided with a containing chamber, the travelling wheels are linked with travelling shafts, the travelling wheels and the roller brush shaft are arranged below the middle part of the shell, the travelling wheels are arranged adjacent to the containing chambers, the upper change gear is rotatably arranged below one of the containing chambers, the axis of the upper change gear is vertical to the axis of the travelling wheels, wherein a first speed reducing motor with two output shafts is arranged in one chamber, the output shafts are provided with a main gear, one end of a pivot shaft of the travelling wheel penetrates into one of the containing chambers and is provided with a first driven gear, one end of a pivot shaft of the upper change gear penetrates into one of the containing chambers and is provided with a second driven gear, a main gear of each output shaft is respectively meshed and linked with the adjacent first driven gear and the adjacent second driven gear, and a second speed reducing motor is arranged in the other containing chamber and drives the roller brush shaft to rotate.
2. A photovoltaic panel cleaning robot as claimed in claim 1, characterized in that: the number of the main gear of each output shaft is one, the main gear of each output shaft is respectively meshed and interlocked with the adjacent second driven gear, and the second driven gear is meshed and interlocked with the adjacent first driven gear.
3. A photovoltaic panel cleaning robot as claimed in claim 1, characterized in that: the number of the main gears of each output shaft is two, one main gear of each output shaft is respectively meshed with and interlocked with the adjacent second driven gears, and the other main gear of each output shaft is respectively meshed with and interlocked with the adjacent first driven gears.
4. A photovoltaic panel cleaning robot as claimed in claim 1, characterized in that: the lower change gear is rotatably arranged below the other accommodating chamber, and the axis of the lower change gear is vertical to the axis of the walking wheel.
5. A photovoltaic panel cleaning robot as claimed in any one of claims 1 to 4, characterized in that: at least the left side or the right side that each holds the room are equipped with a supporting seat to the epirelief, the supporting seat all is equipped with a rotatable auxiliary idle wheel, it sets up side by side with adjacent walking wheel interval to assist the idle wheel, the bottom of walking wheel is greater than the bottom of assisting the idle wheel and is apart from the bottom surface distance of casing.
6. A photovoltaic panel cleaning robot as claimed in claim 5, characterized in that: the supporting seat is convexly arranged on the left side and the right side of each accommodating chamber.
7. A photovoltaic panel cleaning robot as claimed in claim 5, characterized in that: the travelling wheels, the upper change gear and the auxiliary idle wheels can be respectively connected with bearing seats.
8. A photovoltaic panel cleaning robot as claimed in claim 1, characterized in that: a support is fixedly arranged below one accommodating chamber downwards, and at least one anti-falling wheel for being clamped at the bottom of the photovoltaic panel is arranged on the support.
9. A photovoltaic panel cleaning robot as claimed in claim 8, characterized in that: a limiting frame for clamping the bottom of the photovoltaic panel is fixedly arranged downwards below the other accommodating chamber.
10. A photovoltaic panel cleaning robot as claimed in claim 1, characterized in that: and a sheet metal part is fixedly arranged between the main gear and the first speed reducing motor and between the first driven gear and the adjacent wall surface of the accommodating chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010293344.1A CN111404477A (en) | 2020-04-15 | 2020-04-15 | Photovoltaic board cleans machine people |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010293344.1A CN111404477A (en) | 2020-04-15 | 2020-04-15 | Photovoltaic board cleans machine people |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111404477A true CN111404477A (en) | 2020-07-10 |
Family
ID=71431614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010293344.1A Pending CN111404477A (en) | 2020-04-15 | 2020-04-15 | Photovoltaic board cleans machine people |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111404477A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112354924A (en) * | 2020-11-19 | 2021-02-12 | 厦门蓝旭科技有限公司 | Obstacle-crossing photovoltaic cleaning robot |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406292A (en) * | 2013-08-12 | 2013-11-27 | 国家电网公司 | Photovoltaic module cleaning robot |
| CN109366496A (en) * | 2018-11-01 | 2019-02-22 | 郑州德瑞智能科技有限公司 | Sweeping robot ferry device and sweeping robot system |
| CN110270528A (en) * | 2019-07-26 | 2019-09-24 | 无锡安轩自动化科技有限公司 | A kind of driving device of photovoltaic sweeping robot |
| CN110837256A (en) * | 2019-11-13 | 2020-02-25 | 南京师范大学 | Cleaning robot for dirt on surface of solar photovoltaic panel and operation method |
| CN211744421U (en) * | 2020-04-15 | 2020-10-23 | 厦门蓝旭科技有限公司 | Photovoltaic board cleans machine people |
-
2020
- 2020-04-15 CN CN202010293344.1A patent/CN111404477A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406292A (en) * | 2013-08-12 | 2013-11-27 | 国家电网公司 | Photovoltaic module cleaning robot |
| CN109366496A (en) * | 2018-11-01 | 2019-02-22 | 郑州德瑞智能科技有限公司 | Sweeping robot ferry device and sweeping robot system |
| CN110270528A (en) * | 2019-07-26 | 2019-09-24 | 无锡安轩自动化科技有限公司 | A kind of driving device of photovoltaic sweeping robot |
| CN110837256A (en) * | 2019-11-13 | 2020-02-25 | 南京师范大学 | Cleaning robot for dirt on surface of solar photovoltaic panel and operation method |
| CN211744421U (en) * | 2020-04-15 | 2020-10-23 | 厦门蓝旭科技有限公司 | Photovoltaic board cleans machine people |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112354924A (en) * | 2020-11-19 | 2021-02-12 | 厦门蓝旭科技有限公司 | Obstacle-crossing photovoltaic cleaning robot |
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