CN220858049U - Photovoltaic power generation board surface spot monitoring self-cleaning equipment - Google Patents
Photovoltaic power generation board surface spot monitoring self-cleaning equipment Download PDFInfo
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- CN220858049U CN220858049U CN202322634771.3U CN202322634771U CN220858049U CN 220858049 U CN220858049 U CN 220858049U CN 202322634771 U CN202322634771 U CN 202322634771U CN 220858049 U CN220858049 U CN 220858049U
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- cleaning
- power generation
- photovoltaic power
- fixing
- telescopic
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- 238000004140 cleaning Methods 0.000 title claims abstract description 147
- 238000010248 power generation Methods 0.000 title claims abstract description 83
- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000000428 dust Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 13
- 238000005406 washing Methods 0.000 claims description 10
- 239000003599 detergent Substances 0.000 claims description 8
- 238000007790 scraping Methods 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 6
- 230000001939 inductive effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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- Photovoltaic Devices (AREA)
- Cleaning In General (AREA)
Abstract
The utility model discloses a self-cleaning device for monitoring surface stains of a photovoltaic power generation plate, which comprises a cleaning rack used for cleaning the photovoltaic power generation plate, wherein the cleaning rack comprises a fixing support used for fixing the photovoltaic power generation plate, a fixing through groove used for fixing the edge position of the photovoltaic power generation plate is arranged in the fixing support, a cleaning component used for cleaning the photovoltaic power generation plate in a full range is arranged on the cleaning rack, the cleaning component comprises a plurality of guiding telescopic rods, an auxiliary cleaning component used for assisting in cleaning is arranged at the position, close to the guiding telescopic rods, of the cleaning rack, and the purpose of intelligently cleaning small stains on the photovoltaic power generation plate at fixed points is achieved.
Description
Technical Field
The utility model relates to the field of photovoltaics, in particular to self-cleaning equipment for monitoring stains on the surface of a photovoltaic power generation plate.
Background
Photovoltaic power generation is based on the principle of photovoltaic effect, and solar energy is directly converted into electric energy by using a solar cell. The photovoltaic power generation system mainly comprises three parts of a solar panel, a controller and an inverter, and the photovoltaic power generation equipment is extremely refined, reliable, stable, long in service life and simple and convenient to install and maintain. Theoretically, the photovoltaic power generation technology can be used in any occasion requiring power.
Atmospheric conditions and other environmental effects constantly influence the state of photovoltaic power plants. Dirt and other types of contaminants deposited on the surfaces of the components can prevent or reduce direct sunlight, negatively impacting the yield of the system unit. Contamination of solar panels occurs in different ways and forms and is not always visible to the naked eye. However, even the thinnest layers of dust and dirt, such as smoke and pollen, along with the feces and leaves of birds, can strongly affect the performance of the photovoltaic system. Moss and lichen are serious risks that they attack the frame and module assemblies and cause permanent damage to plants. All these impurities pose a great risk to the efficiency of the photovoltaic system. If the individual unit sections of the module are soiled or covered, they may overheat. In the worst case, if the battery is overheated, the module is damaged, and the combustible material under the module may catch fire. However, in most overheat situations, long-term damage to the module can lead to performance degradation without fire. If rain accumulates at the lower edge of the module (especially if the inclination of the module is low) and stays there for a long time, moisture can enter the laminate and cause delamination problems;
Various cleaning techniques can be classified into manual cleaning, machine cleaning, and robot cleaning. In these areas, the cleaning process also varies greatly in the use of detergents, water filters, instruments and equipment;
However, the current cleaning mode can only uniformly clean when the dirt of the photovoltaic cell reaches the cleaning degree, the cost for cleaning one piece or one part of the photovoltaic cell panel is higher, and when the photovoltaic cell panel is erected at a high place, the manual cleaning is also more troublesome.
Disclosure of utility model
The utility model aims to provide self-cleaning equipment for monitoring stains on the surface of a photovoltaic power generation plate, which aims to solve the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The utility model provides a photovoltaic power generation board surface spot monitoring self-cleaning equipment, equipment is including being used for carrying out abluent wash rack to photovoltaic power generation board, wash rack is including being used for carrying out fixed bolster that fixes photovoltaic power generation board border position, be equipped with the fixed slot that leads to that is used for carrying out full scope clear subassembly that washs to photovoltaic power generation board in the wash rack, wash the subassembly and include a plurality of direction telescopic links, the direction telescopic link comprises a plurality of telescopic links, wash rack is close to the position of direction telescopic link and is equipped with and is used for supplementary abluent supplementary subassembly that washs, supplementary subassembly that washs includes the function washs the case, the connection can be dismantled with the fixed bolster to the cleaning function case.
By adopting the technical scheme: the cleaning machine frame can clean the photovoltaic power generation panel, and the fixed bolster can be fixed to photovoltaic power generation panel border position to wash the photovoltaic power generation panel, cleaning component and supplementary cleaning component can carry out the fixed point to the surface spot to the photovoltaic power generation panel simultaneously and wash, and the function washs the case and is used for storing and washs rivers.
Further set up: the cleaning assembly comprises a guide wheel, a sliding groove for driving the guide wheel to slide in a limiting manner is formed in the bottom of the guide telescopic rod close to the guide wheel, the guide wheel is in sliding connection with the sliding groove, a pushing cylinder for pushing the guide wheel to move is arranged in the sliding groove, moving rods are arranged on two sides of the guide wheel, limiting moving grooves are formed in the positions of the guide telescopic rod close to the moving rods, the moving rods are connected in the limiting moving grooves in a sliding manner, the guide wheel is connected with the moving rods through bearings, cleaning tables for cleaning the surface of the photovoltaic cell panel are arranged on two sides of the bottom of the moving rods, through holes are formed in the cleaning tables, cleaning rollers are arranged in the through holes and are connected with the through holes through bearings, and the cleaning rollers are connected with adjacent cleaning rollers through rotating shafts.
By adopting the technical scheme: the guide wheel can drive the cleaning platform and remove the washing to photovoltaic power generation board, promotes the cylinder and can promote inside guide wheel and the movable rod of direction telescopic link and remove, and the movable rod can support the cleaning platform, carries out the fixed point through the cleaning roller on the cleaning platform and washs photovoltaic power generation board surface spot.
Further set up: the auxiliary cleaning component comprises a cleaning box used for storing a detergent, the cleaning box is arranged between the moving rods and detachably connected with the moving rods, a cavity used for storing cleaning water is formed in the functional cleaning box, a telescopic guide pipe used for guiding the cleaning water into the cleaning box is arranged in the cavity, the telescopic guide pipe is respectively embedded into the functional cleaning box and the cleaning box, a miniature water pump used for guiding the water into the telescopic guide pipe is arranged in the functional cleaning box, a plurality of water outlet holes used for guiding the water into the cleaning box to flow out are formed in one side, close to the cleaning roller, of the cleaning table, and an induction valve used for inducing a pushing cylinder is arranged on the cleaning box and electrically connected with the pushing cylinder.
By adopting the technical scheme: the cleaning box is used for placing the detergent that is used for wasing the photovoltaic power generation board, and flexible honeycomb duct can be with inside the inside rivers leading-in cleaning box of function cleaning box, with the detergent intensive mixing, through the water outlet outflow of the inside apopore of washing platform of induction valve with the rivers after mixing, drive the washing water through wasing the gyro wheel and wash photovoltaic power generation board surface.
Further set up: one side of the guiding telescopic rod, which is far away from the fixed support, is provided with a fixed table for fixing the cleaning machine frame, a quick-drying fan for drying the cleaned photovoltaic cell panel is arranged inside the fixed table, one side of the fixed table, which is close to the fixed support, is provided with an arc-shaped air blowing port, and the bottom of the fixed table is provided with a telescopic magnet for fixing the cleaning machine frame on the photovoltaic cell panel.
By adopting the technical scheme: the fixed station is used for fixing the cleaning machine frame on the photovoltaic power generation plate, the guiding telescopic rod more firmly drives the cleaning station to clean the photovoltaic power generation plate, the quick-drying fan can blow the surface of the photovoltaic power generation plate, the quick-drying fan is accelerated to dry out the photovoltaic power generation plate, the arc-shaped air blowing opening can enlarge the air outlet range of the quick-drying fan, and the telescopic magnetic energy can fix the fixed station on the photovoltaic power generation plate.
Further set up: the fixed limiting plate that is used for spacing photovoltaic power generation board that leads to inslot portion is equipped with, and fixed inslot portion is equipped with the reset spring that is used for compressing tightly limiting plate and photovoltaic power generation board and fixes, and reset spring can dismantle with fixed logical groove and be connected.
By adopting the technical scheme: the limiting plate can fix the edge position of the photovoltaic power generation plate, and the reset spring can compress the gap between the limiting plate and the photovoltaic power generation plate to fix.
Further set up: one side of the cleaning table, which is far away from the fixed support, is provided with a dust scraping plate for scraping dust on the surface of the photovoltaic cell panel in advance, and the dust scraping plate is triangular and is made of soft rubber.
By adopting the technical scheme: the dust scraper can scrape dust on the surface of the photovoltaic cell panel in advance, so that the photovoltaic cell panel can be cleaned later, and the soft rubber is not easy to damage the surface of the photovoltaic cell panel.
Compared with the prior art, the utility model has the beneficial effects that: the method aims at carrying out fixed-point intelligent cleaning on small stains on the photovoltaic cell panel, avoiding the influence of the small stains on the overall performance of the photovoltaic cell, realizing the nondestructive cleaning of the small stains on the photovoltaic cell, and reducing the cost of cleaning the photovoltaic cell due to the whole range of the small stains.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
FIG. 1 is a schematic structural view of a self-cleaning device for monitoring stains on the surface of a photovoltaic power generation panel;
FIG. 2 is a partial view of a photovoltaic panel surface soil monitoring self-cleaning apparatus of the present utility model;
fig. 3 is a cross-sectional view of a photovoltaic panel surface soil monitoring self-cleaning device of the present utility model.
In the figure, 1, a fixed bracket; 2. a limiting plate; 3. a guiding telescopic rod; 4. a functional cleaning box; 5. a guide wheel; 6. a moving rod; 7. a cleaning table; 8. cleaning a roller; 9. a dust scraper; 10. a fixed table; 11. a quick-drying fan; 12. an arc-shaped air blowing port; 13. a cleaning box; 14. a telescopic guide pipe; 15. and (5) sensing the valve.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 3, in an embodiment of the present utility model, a self-cleaning device for monitoring stains on a surface of a photovoltaic power generation plate includes a cleaning frame for cleaning the photovoltaic power generation plate, the cleaning frame includes a fixing support 1 for fixing the photovoltaic power generation plate, a fixing through groove for fixing an edge position of the photovoltaic power generation plate is arranged in the fixing support 1, a limiting plate 2 for limiting the photovoltaic power generation plate is arranged in the fixing through groove, a reset spring for pressing the limiting plate 2 and fixing the photovoltaic power generation plate is arranged in the fixing through groove, and the reset spring is detachably connected with the fixing through groove.
Limiting plate 2 can fix photovoltaic power generation board border position, and reset spring can compress tightly the clearance between limiting plate 2 and the photovoltaic power generation board, fixes.
Be equipped with in the cleaning machine frame and be used for carrying out clear subassembly that washs of full scope to photovoltaic power generation board, it includes a plurality of direction telescopic links 3 to wash the subassembly, and direction telescopic links 3 comprise a plurality of telescopic links, and the cleaning machine frame is close to the position of direction telescopic links 3 and is equipped with and is used for supplementary abluent supplementary subassembly that washs, and supplementary subassembly that washs includes function washing case 4, washs the function case and can dismantle with fixed bolster 1 and be connected.
The cleaning machine frame can clean the photovoltaic power generation panel, and fixed bolster 1 can be fixed to photovoltaic power generation panel border position to wash the photovoltaic power generation panel, wash subassembly and supplementary cleaning subassembly can carry out the fixed point to the surface spot to the photovoltaic power generation panel simultaneously and wash, and function washs case 4 and is used for storing and washs the rivers.
The cleaning assembly comprises a guide wheel 5, a sliding groove for driving the guide wheel 5 to slide in a limiting manner is formed in the bottom of the guide telescopic rod 3, the guide wheel 5 is slidably connected with the sliding groove, a pushing cylinder for pushing the guide wheel 5 to move is arranged in the sliding groove, moving rods 6 are arranged on two sides of the guide wheel 5, limiting moving grooves are formed in the positions, close to the moving rods 6, of the guide telescopic rod 3, the moving rods 6 are slidably connected in the limiting moving grooves, the guide wheel 5 is connected with the moving rods 6 through bearings, cleaning tables 7 for cleaning the surface of a photovoltaic cell panel are arranged on two sides of the bottom of the moving rods 6, through holes are formed in the cleaning tables 7, cleaning rollers 8 are connected with the through holes through bearings, the cleaning rollers 8 are connected with adjacent cleaning rollers 8 through shafts, dust scraping plates 9 for scraping dust on the surface of the photovoltaic cell panel in advance are arranged on one side, far away from the fixing support 1, of each dust scraping plate 9 is triangular, and the dust scraping plates are made of soft rubber.
One side of the guiding telescopic rod 3, which is far away from the fixed support 1, is provided with a fixed table 10 for fixing the cleaning machine frame, a quick-drying fan 11 for drying the cleaned photovoltaic cell panel is arranged inside the fixed table 10, one side of the fixed table 10, which is close to the fixed support 1, is provided with an arc-shaped air blowing opening 12, and the bottom of the fixed table 10 is provided with a telescopic magnetic attraction for fixing the cleaning machine frame on the photovoltaic cell panel.
The guide wheel 5 can drive the cleaning platform 7 and remove the washing to photovoltaic power generation board, promotes the cylinder and can promote the inside guide wheel 5 of direction telescopic link 3 and remove with movable rod 6, and movable rod 6 can support cleaning platform 7, carries out the fixed point through cleaning gyro wheel 8 on cleaning platform 7 to photovoltaic power generation board surface spot, and dust scraper blade 9 can wipe in advance photovoltaic power generation board surface dust, just subsequent washing, and soft rubber is difficult for damaging photovoltaic power generation board surface.
The fixed station 10 is used for fixing the cleaning machine frame on the photovoltaic power generation plate, the guiding telescopic rod 3 is more stable to drive the cleaning station 7 to clean the photovoltaic power generation plate, the quick-drying fan 11 can blow the surface of the photovoltaic power generation plate, the photovoltaic power generation plate is accelerated to dry thoroughly, the arc-shaped air blowing opening 12 can expand the air outlet range of the quick-drying fan 11, and the telescopic magnetic energy can fix the fixed station 10 on the photovoltaic power generation plate.
The auxiliary cleaning component comprises a cleaning box 13 for storing a detergent, the cleaning box 13 is arranged between the movable rods 6 and detachably connected with the movable rods 6, a cavity for storing cleaning water is formed in the functional cleaning box 4, a telescopic guide pipe 14 for guiding cleaning water into the cleaning box 13 is arranged in the cavity, the telescopic guide pipe 14 is respectively embedded in the functional cleaning box 4 and the cleaning box 13, a miniature water pump for guiding water into the telescopic guide pipe 14 is arranged in the functional cleaning box 4, a plurality of water outlets for guiding water into the cleaning box 13 to flow out are formed in one side, close to the cleaning roller 8, of the cleaning table 7, and an induction valve 15 for inducing a pushing cylinder is arranged on the cleaning box 13 and is electrically connected with the pushing cylinder.
The cleaning box 13 is used for placing the detergent that is used for wasing the photovoltaic power generation board, and flexible honeycomb duct 14 can be with inside the inside rivers leading-in cleaning box 13 of function cleaning case 4, with the detergent intensive mixing, through the apopore outflow of the inside of induction valve 15 through cleaning table 7 with the rivers after mixing, drive the washing water through cleaning gyro wheel 8 and wash photovoltaic power generation board surface.
The working principle of the utility model is as follows: an operator fixedly places a fixing support 1 at the edge position close to the small spot on the surface of the photovoltaic power generation plate, fixes the edge position of the photovoltaic power generation plate through a limiting plate 2, pulls out a plurality of telescopic rods inside a guiding telescopic rod 3 close to the small spot on the surface of the photovoltaic power generation plate, adjusts the telescopic position of telescopic magnetic attraction, fixes the guiding telescopic rod 3 on the photovoltaic power generation plate through the telescopic magnetic attraction, and opens a pushing cylinder and a miniature water pump inside a functional cleaning box 4;
Promote inside leading wheel 5 and the movable rod 6 of cylinder promotion direction telescopic link 3 and remove, drive wash platform 7 and remove the washing, miniature pump is inside leading-in washing box 13 of rivers through flexible honeycomb duct 14, simultaneously, the response valve 15 response promotes opening of cylinder and has passed the apopore outflow that response valve 15 will mix the back rivers through wasing the platform 7 inside, wash the gyro wheel 8 through wasing on the platform 7 and carry out the fixed point and wash photovoltaic power generation board surface spot, open quick-drying fan 11 and blow to photovoltaic power generation board surface, accelerate the photovoltaic power generation board and dry thoroughly.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. A photovoltaic power generation board surface spot monitoring self-cleaning equipment, its characterized in that: the equipment is including being used for carrying out abluent wash rack to photovoltaic power generation board, wash rack is including being used for carrying out fixed bolster (1) to photovoltaic power generation board, fixed bolster (1) inside is equipped with the fixed logical groove of fixed photovoltaic power generation board border position, be equipped with in the wash rack and be used for carrying out the clear subassembly of washing of full range to photovoltaic power generation board, wash the subassembly and include a plurality of direction telescopic links (3), direction telescopic link (3) are constituteed by a plurality of telescopic links, wash rack is close to the position of direction telescopic link (3) and is equipped with and is used for supplementary abluent supplementary subassembly, supplementary subassembly includes function wash case (4), wash the function case and can dismantle with fixed bolster (1) and be connected.
2. The self-cleaning device for monitoring the surface stains of the photovoltaic power generation panel is characterized in that the cleaning assembly comprises a guide wheel (5), a sliding groove for driving the guide wheel (5) to slide in a limiting mode is formed in the bottom of the guide telescopic rod (3) close to the guide wheel (5), the guide wheel (5) is connected with the sliding groove in a sliding mode, a pushing cylinder for pushing the guide wheel (5) to move is arranged in the sliding groove, moving rods (6) are arranged on two sides of the guide wheel (5), limiting moving grooves are formed in the positions, close to the moving rods (6), of the guide telescopic rod (3), the moving rods (6) are connected in the limiting moving grooves in a sliding mode, the guide wheel (5) is connected with the moving rods (6) through bearings, a cleaning table (7) for cleaning the surface of the photovoltaic power generation panel is arranged on two sides of the bottom of the moving rods (6), a through hole is formed in the cleaning table (7), a cleaning roller (8) is arranged in the through hole, the cleaning roller (8) is connected with the through a bearing, and the cleaning roller (8) is connected with an adjacent cleaning roller (8) through a rotating shaft.
3. The self-cleaning device for monitoring surface stains of a photovoltaic power generation plate is characterized in that the auxiliary cleaning assembly comprises a cleaning box (13) for storing a detergent, the cleaning box (13) is arranged between the moving rods (6) and is detachably connected with the moving rods (6), a cavity for storing cleaning water is formed in the functional cleaning box (4), a telescopic guide pipe (14) for guiding cleaning water into the cleaning box (13) is formed in the cavity, the telescopic guide pipe (14) is respectively embedded in the functional cleaning box (4) and the cleaning box (13), a miniature water pump for guiding water into the telescopic guide pipe (14) is arranged in the functional cleaning box (4), a plurality of water outlet holes for guiding the water into the cleaning box (13) are formed in one side, close to the cleaning roller (8), of the cleaning table (7), the induction valve (15) for inducing a pushing cylinder is arranged in the cleaning box (13), and the induction valve (15) is electrically connected with the pushing cylinder.
4. The self-cleaning equipment for monitoring surface stains of the photovoltaic power generation panel is characterized in that a fixing table (10) for fixing a cleaning machine frame is arranged on one side, far away from a fixing support (1), of a guiding telescopic rod (3), a quick-drying fan (11) for drying the cleaned photovoltaic power generation panel is arranged inside the fixing table (10), an arc-shaped air blowing opening (12) is formed in one side, close to the fixing support (1), of the fixing table (10), and telescopic magnetic attraction for fixing the cleaning machine frame on the photovoltaic power generation panel is arranged at the bottom of the fixing table (10).
5. The self-cleaning device for monitoring the surface stains of the photovoltaic power generation plate is characterized in that a limiting plate (2) used for limiting the photovoltaic power generation plate is arranged in the fixing through groove, a reset spring used for pressing the limiting plate (2) and fixing the photovoltaic power generation plate is arranged in the fixing through groove, and the reset spring is detachably connected with the fixing through groove.
6. The self-cleaning device for monitoring the surface stains of the photovoltaic power generation panel according to claim 2 is characterized in that a dust scraper (9) for scraping dust on the surface of the photovoltaic power generation panel in advance is arranged on one side, away from the fixed support (1), of the cleaning table (7), and the dust scraper (9) is triangular and made of soft rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322634771.3U CN220858049U (en) | 2023-09-27 | 2023-09-27 | Photovoltaic power generation board surface spot monitoring self-cleaning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322634771.3U CN220858049U (en) | 2023-09-27 | 2023-09-27 | Photovoltaic power generation board surface spot monitoring self-cleaning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220858049U true CN220858049U (en) | 2024-04-26 |
Family
ID=90778075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322634771.3U Active CN220858049U (en) | 2023-09-27 | 2023-09-27 | Photovoltaic power generation board surface spot monitoring self-cleaning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220858049U (en) |
-
2023
- 2023-09-27 CN CN202322634771.3U patent/CN220858049U/en active Active
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