CN215925828U - A cleaning device for municipal works - Google Patents
A cleaning device for municipal works Download PDFInfo
- Publication number
- CN215925828U CN215925828U CN202121788364.2U CN202121788364U CN215925828U CN 215925828 U CN215925828 U CN 215925828U CN 202121788364 U CN202121788364 U CN 202121788364U CN 215925828 U CN215925828 U CN 215925828U
- Authority
- CN
- China
- Prior art keywords
- dust
- fixedly connected
- pipe
- vehicle body
- cleaning device
- 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
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 37
- 239000000428 dust Substances 0.000 claims abstract description 114
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 39
- 239000007921 spray Substances 0.000 claims abstract description 22
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 239000003651 drinking water Substances 0.000 claims abstract description 8
- 235000020188 drinking water Nutrition 0.000 claims abstract description 8
- 238000007790 scraping Methods 0.000 claims description 29
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 239000010865 sewage Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 3
- 238000010408 sweeping Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims 2
- 230000000712 assembly Effects 0.000 abstract description 7
- 238000000429 assembly Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003699 hair surface Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 238000005086 pumping Methods 0.000 description 4
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Cleaning In General (AREA)
Abstract
The utility model discloses a cleaning device for municipal engineering, which comprises a vehicle body assembly, wherein the vehicle body assembly comprises a vehicle body, a working cavity is formed in the middle of the bottom of the vehicle body, the left side and the right side of the top of the working cavity are symmetrically and fixedly connected with cleaning assemblies, the two cleaning assemblies respectively comprise electric telescopic rods, and the bottoms of the two electric telescopic rods are respectively and rotatably connected with a roller. This a cleaning device for municipal works, the doctor-bar effectively strikes off the dust of the adhesion on brush hair surface, through the main water pipe, mutually supporting of distributive pipe and shower head, the realization is washed spraying of brush hair, make the brush hair continuous work under clean state, improve device's clean effect, high durability and convenient use, through mutually supporting of dust fall drinking-water pipe and second dust fall shower nozzle, spray the dust rubbish of just entering rubbish box inside, effectively restrain the raise dust, reach the purpose of dust fall, the structure is exquisite simple.
Description
Technical Field
The utility model relates to the technical field of municipal engineering, in particular to a cleaning device for municipal engineering.
Background
In China, municipal facilities refer to various buildings, structures, equipment and the like which are arranged in planning and construction ranges of urban areas and towns (villages) and provide paid or unpaid public products and services for residents based on government responsibilities and obligations. Various public infrastructure construction supporting in city life all belong to the municipal works category, are maintaining the in-process to the town road, need clean the road surface, and the mode of cleaning has two kinds, and one kind is artifical and cleans, and another kind utilizes cleaning device to clean the road surface.
But cleaning device's cleaning brush in the existing market easy too much dust of adhesion when using, is difficult to effectively clean the rubbish on the road surface, seriously influences clean effect to rubbish is blown up again easily after being inhaled the rubbish box, causes the phenomenon that inside rubbish flies in disorder.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a cleaning device for municipal engineering, which solves the problems that when a cleaning brush of the cleaning device is used, excessive dust is easily adhered, the garbage on the road surface is difficult to clean effectively, the cleaning effect is seriously influenced, and the garbage is easy to raise dust again after being sucked into a garbage box.
In order to achieve the purpose, the utility model is realized by the following technical scheme: a cleaning device for municipal works comprises a vehicle body assembly, wherein the vehicle body assembly comprises a vehicle body, a working chamber is arranged in the middle of the bottom of the vehicle body, cleaning assemblies are symmetrically and fixedly connected to the left side and the right side of the top of the working chamber, each cleaning assembly comprises an electric telescopic rod, the bottoms of the two electric telescopic rods are rotatably connected with rollers, the two rollers rotate relatively, a plurality of bristles are uniformly and fixedly connected to the outer surface of each roller, a dust scraping cover assembly covers the upper portion of each roller, the front end and the rear end of the dust scraping cover assembly are fixedly connected with the bottom of the electric telescopic rods, each dust scraping cover assembly comprises a dust scraping cover, a plurality of scraping blades are uniformly and fixedly connected to the inner wall of the dust scraping cover, a spraying assembly penetrates through the inside of each roller, each spraying assembly comprises a main water pipe penetrating through the middle inside of each roller, and a plurality of water distribution pipes are uniformly and fixedly communicated with the periphery of the main water pipe, and the distributive pipe runs through the outer wall fixedly connected with shower head of cylinder, the front end of main water pipe rotates and is connected with the connecting pipe that runs through electric telescopic handle front end bottom, the inner chamber bottom right side fixedly connected with of automobile body sprays the subassembly, it includes the water tank to spray the subassembly, the left end through connection of water tank has the hose, the left end of hose communicates with two connecting pipes respectively, the fixed garbage collection subassembly that is provided with in inner chamber left side of automobile body.
Preferably, the dust collection pipe is fixedly connected to the middle of the top of the working chamber, the dust collection cover assembly is fixedly connected to the bottom of the dust collection pipe, and the dust collection cover assembly comprises a dust collection cover.
Preferably, the inner wall of the dust hood is connected with the stirring fan blades in a rotating mode, and the bottom of the water tank is communicated with a first dust falling spray head penetrating through the bottom of the vehicle body.
Preferably, the garbage collection assembly comprises a garbage box, the inner cavity of the vehicle body is fixedly connected with a dust suction pump at the top of the dust suction pipe, and the outlet end of the dust suction pump is fixedly connected with a dust discharge pipe.
Preferably, the left end of dust exhaust pipe runs through the right wall of rubbish box, the top through connection of water tank has the dust fall drinking-water pipe, the fixed intercommunication in top of dust fall drinking-water pipe has the second dust fall shower nozzle that runs through the right wall of rubbish box, and the second dust fall shower nozzle hugs closely in the top of dust exhaust pipe.
Preferably, the bottom of the garbage box is fixedly provided with a sewage filter box, and the sewage filter box is positioned at the bottom of the inner cavity of the vehicle body.
Advantageous effects
The utility model provides a cleaning device for municipal engineering. Compared with the prior art, the method has the following beneficial effects:
(1) the cleaning device for municipal engineering comprises two cleaning assemblies, wherein the two cleaning assemblies respectively comprise an electric telescopic rod, the bottoms of the two electric telescopic rods are respectively and rotatably connected with a roller, the two rollers are relatively operated, a plurality of bristles are uniformly and fixedly connected with the outer surface of the roller, a dust scraping cover assembly covers the upper part of the roller, the front end and the rear end of the dust scraping cover assembly are fixedly connected with the bottoms of the electric telescopic rods, the dust scraping cover assembly comprises a dust scraping cover, a plurality of scraping blades are uniformly and fixedly connected with the inner wall of the dust scraping cover, a spraying assembly penetrates through the inner part of the roller, the spraying assembly comprises a main water pipe penetrating through the middle part of the inner part of the roller, a plurality of water distribution pipes are uniformly and fixedly communicated around the main water pipe, the water distribution pipes penetrate through the outer wall of the roller and are fixedly connected with a spraying head, the front end of the main water pipe is rotatably connected with a connecting pipe penetrating through the bottom of the front end of the electric telescopic rod, and the spraying assembly is fixedly connected with the right side of the bottom of an inner cavity of a vehicle body, the spraying assembly comprises a water tank, the left end of the water tank is connected with a hose in a penetrating manner, the left end of the hose is communicated with two connecting pipes respectively, a garbage collecting assembly is fixedly arranged on the left side of an inner cavity of the vehicle body, dust adhered to the surfaces of the bristles by the scraping pieces is effectively scraped, and through mutual matching of the main water pipe, the water dividing pipe and the spray header, spraying and flushing of the bristles are achieved, so that the bristles continuously work under a clean state, the cleaning effect of the device is improved, and the use is convenient.
(2) This a cleaning device for municipal works, there is the dust fall drinking-water pipe through the top through connection at the water tank, and the fixed intercommunication in top of dust fall drinking-water pipe has the second dust fall shower nozzle that runs through rubbish box right wall, and the second dust fall shower nozzle hugs closely in the top of dust exhaust pipe, through mutually supporting of dust fall drinking-water pipe and second dust fall shower nozzle, sprays the dust rubbish of just entering rubbish box inside, effectively suppresses the raise dust, reaches the purpose of dust fall, and the structure is exquisite simple.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view of the dust hood assembly and spray assembly of the present invention;
fig. 3 is a bottom view of the suction hood assembly of the present invention.
In the figure: 1. a body component; 11. a vehicle body; 12. a working chamber; 13. a dust collection pipe; 14. a suction hood assembly; 141. a dust hood; 142. crushing the fan blades; 2. a sweeping assembly; 21. an electric telescopic rod; 22. a drum; 23. brushing; 24. a dust hood assembly; 241. a dust scraping cover; 242. scraping a blade; 25. a spray assembly; 251. a connecting pipe; 252. a main water pipe; 253. a water diversion pipe; 254. a shower head; 3. a spray assembly; 31. a water tank; 32. a first dust fall spray head; 33. a hose; 4. a waste collection assembly; 41. a trash box; 42. a dust suction pump; 43. a dust exhaust pipe; 44. a dust-settling water pumping pipe; 45. a second dust fall spray head; 46. a sewage filtering tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a cleaning device for municipal works comprises a vehicle body assembly 1, the vehicle body assembly 1 comprises a vehicle body 11, a working cavity 12 is arranged in the middle of the bottom of the vehicle body 11, the left side and the right side of the top of the working cavity 12 are symmetrically and fixedly connected with cleaning assemblies 2, each of the two cleaning assemblies 2 comprises an electric telescopic rod 21, the bottoms of the two electric telescopic rods 21 are rotatably connected with rollers 22, the two rollers 22 rotate relatively, a plurality of bristles 23 are uniformly and fixedly connected with the outer surface of each roller 22, a dust scraping cover assembly 24 covers the upper portion of each roller 22, the front end and the rear end of each dust scraping cover assembly 24 are fixedly connected with the bottom of each electric telescopic rod 21, each dust scraping cover assembly 24 comprises a dust scraping cover 241, a plurality of scraping blades 242 are uniformly and fixedly connected with the inner wall of each dust scraping cover 241, a spraying assembly 25 penetrates through the inside of each roller 22, each spraying assembly 25 comprises a main water pipe 252 penetrating through the middle inside each roller 22, a plurality of water distribution pipes 253 are uniformly and fixedly communicated with the periphery of each main water pipe 252, the water diversion pipe 253 penetrates through the outer wall of the roller 22 and is fixedly connected with a spray head 254, the front end of the main water pipe 252 is rotatably connected with a connecting pipe 251 penetrating through the bottom of the front end of the electric telescopic rod 21, the right side of the bottom of the inner cavity of the vehicle body 11 is fixedly connected with a spraying assembly 3, the spraying assembly 3 comprises a water tank 31, the left end of the water tank 31 is connected with a hose 33 in a penetrating way, the left end of the hose 33 is respectively communicated with the two connecting pipes 251, the left side of the inner cavity of the vehicle body 11 is fixedly provided with a garbage collecting assembly 4, the scraping piece 242 effectively scrapes off dust adhered to the surfaces of the bristles 23, through the mutual matching of the main water pipe 252, the water diversion pipe 253 and the spray head 254, the bristles 23 are sprayed and washed, the bristles 23 can continuously work in a clean state, the cleaning effect of the device is improved, the use is convenient, the dust collection pipe 13 is fixedly connected in the middle of the top of the working cavity 12, and the dust collection cover assembly 14 is fixedly connected to the bottom of the dust collection pipe 13, the dust hood assembly 14 comprises a dust hood 141, stirring fan blades 142 are rotatably connected between the inner walls of the dust hood 141, the bottom of the water tank 31 is communicated with a first dust fall spray head 32 penetrating the bottom of the vehicle body 11, the garbage collection assembly 4 comprises a garbage box 41, a dust suction pump 42 is fixedly connected to the top of an inner cavity of the vehicle body 11 and positioned on the dust suction pipe 13, an outlet end of the dust suction pump 42 is fixedly connected with a dust exhaust pipe 43, the left end of the dust exhaust pipe 43 penetrates through the right wall of the garbage box 41, the top of the water tank 31 is fixedly connected with a dust fall water pumping pipe 44, a second dust fall spray head 45 penetrating through the right wall of the garbage box 41 is fixedly communicated with the top of the dust fall water pumping pipe 44, the second dust fall spray head 45 is tightly attached to the upper part of the dust exhaust pipe 43, a sewage filter tank 46 is fixedly arranged at the bottom of the garbage box 41, the sewage filter tank 46 is positioned at the bottom of the inner cavity of the vehicle body 11, and the dust fall water pumping pipe 44 and the second dust fall spray head 45 are mutually matched, the dust and garbage which just enters the garbage box 41 are sprayed, dust raising is effectively restrained, the aim of dust falling is achieved, and the structure is delicate and simple.
And those not described in detail in this specification are well within the skill of those in the art.
When in use, the device is driven to a working road surface, the two rollers 22 are driven by the external motor to rotate relatively fast, dust and garbage on the road surface are cleaned to the bottom of the dust hood assembly 14, and the dust suction pump 42 works, under strong suction force, dust and garbage at the bottom of the dust hood assembly 14 are sucked into the dust suction pipe 13 and then discharged into the garbage box 41 through the dust discharge pipe 43, the water mist sprayed from the second dust fall nozzle 45 carries out dust fall treatment on the interior of the garbage box 41, the crushing fan blades 142 rotate at high speed under the drive of strong wind power in the process, the garbage in the dust hood 141 is crushed, the brush 23 rotates rapidly in the cleaning process, when rotated inside the dust-scraping cover 241, the blade 242 scrapes off dust adhered to the surfaces of the brush staples 23, while the bristles 23 are washed by the water sprayed from the spray head 254, so that the bristles 23 are maintained to operate in a clean state.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A cleaning device for municipal works, includes body assembly (1), its characterized in that: the cleaning vehicle is characterized in that the vehicle body component (1) comprises a vehicle body (11), a working chamber (12) is formed in the middle of the bottom of the vehicle body (11), the left and right sides of the top of the working chamber (12) are symmetrically and fixedly connected with cleaning components (2), the cleaning components (2) comprise electric telescopic rods (21), the bottoms of the electric telescopic rods (21) are rotatably connected with rollers (22), the two rollers (22) run relatively, a plurality of bristles (23) are uniformly and fixedly connected with the outer surface of the rollers (22), a dust scraping cover component (24) covers the upper portion of the rollers (22), the front end and the rear end of the dust scraping cover component (24) are fixedly connected with the bottom of the electric telescopic rods (21), the dust scraping cover component (24) comprises a dust scraping cover (241), a plurality of scraping blades (242) are uniformly and fixedly connected with the inner wall of the dust scraping cover (241), and a spraying component (25) penetrates through the inner portion of the rollers (22), spray assembly (25) including running through main water pipe (252) in the middle of cylinder (22) is inside, the even fixed intercommunication all around of main water pipe (252) has a plurality of distributive pipe (253), and distributive pipe (253) runs through outer wall fixedly connected with shower head (254) of cylinder (22), the front end of main water pipe (252) is rotated and is connected with connecting pipe (251) that run through electric telescopic handle (21) front end bottom, the inner chamber bottom right side fixedly connected with of automobile body (11) sprays subassembly (3), it includes water tank (31) to spray subassembly (3), the left end through connection of water tank (31) has hose (33), the left end of hose (33) communicates with two connecting pipes (251) respectively, the fixed garbage collection subassembly (4) that is provided with in the inner chamber left side of automobile body (11).
2. A cleaning device for municipal works according to claim 1, characterized in that: fixedly connected with dust absorption pipe (13) in the middle of the top of working chamber (12), the bottom fixedly connected with suction hood subassembly (14) of dust absorption pipe (13), suction hood subassembly (14) includes suction hood (141).
3. A sweeping device for municipal works according to claim 2, characterized in that: stirring fan blades (142) are rotatably connected between the inner walls of the dust collection cover (141), and the bottom of the water tank (31) is communicated with a first dust fall spray head (32) penetrating through the bottom of the vehicle body (11).
4. A cleaning device for municipal works according to claim 1, characterized in that: the garbage collection assembly (4) comprises a garbage box (41), the inner cavity of the vehicle body (11) is located at the top of the dust collection pipe (13) and is fixedly connected with a dust collection pump (42), and the outlet end of the dust collection pump (42) is fixedly connected with a dust discharge pipe (43).
5. A cleaning device for municipal works according to claim 4, characterized in that: the left end of dust exhaust pipe (43) runs through the right wall of rubbish box (41), the top through connection of water tank (31) has dust fall drinking-water pipe (44), the fixed intercommunication in top of dust fall drinking-water pipe (44) has second dust fall shower nozzle (45) that runs through rubbish box (41) right wall, and second dust fall shower nozzle (45) hug closely in the top of dust exhaust pipe (43).
6. A cleaning device for municipal works according to claim 4, characterized in that: the bottom of the garbage box (41) is fixedly provided with a sewage filter tank (46), and the sewage filter tank (46) is positioned at the bottom of the inner cavity of the vehicle body (11).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202121788364.2U CN215925828U (en) | 2021-08-03 | 2021-08-03 | A cleaning device for municipal works |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202121788364.2U CN215925828U (en) | 2021-08-03 | 2021-08-03 | A cleaning device for municipal works |
Publications (1)
Publication Number | Publication Date |
---|---|
CN215925828U true CN215925828U (en) | 2022-03-01 |
Family
ID=80398201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202121788364.2U Active CN215925828U (en) | 2021-08-03 | 2021-08-03 | A cleaning device for municipal works |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN215925828U (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114808814A (en) * | 2022-05-20 | 2022-07-29 | 陕西黑松环保科技有限公司 | Intelligent control sweeper with good self-cleaning function |
CN115012349A (en) * | 2022-08-08 | 2022-09-06 | 杰瑞环境科技有限公司 | Rolling brush cleaning mechanism, rolling brush device and cleaning vehicle |
CN115323972A (en) * | 2022-08-15 | 2022-11-11 | 南通绿能环保设备有限公司 | Non-contact self-cleaning sweeper |
CN117702551A (en) * | 2023-12-28 | 2024-03-15 | 湖北中德焊接技术有限公司 | Railway ballast sucking vehicle |
-
2021
- 2021-08-03 CN CN202121788364.2U patent/CN215925828U/en active Active
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114808814A (en) * | 2022-05-20 | 2022-07-29 | 陕西黑松环保科技有限公司 | Intelligent control sweeper with good self-cleaning function |
CN114808814B (en) * | 2022-05-20 | 2024-01-19 | 陕西黑松环保科技有限公司 | Intelligent control motor sweeper with good self-cleaning function |
CN115012349A (en) * | 2022-08-08 | 2022-09-06 | 杰瑞环境科技有限公司 | Rolling brush cleaning mechanism, rolling brush device and cleaning vehicle |
CN115323972A (en) * | 2022-08-15 | 2022-11-11 | 南通绿能环保设备有限公司 | Non-contact self-cleaning sweeper |
CN115323972B (en) * | 2022-08-15 | 2024-01-12 | 南通绿能环保设备有限公司 | Non-contact self-cleaning sweeper |
CN117702551A (en) * | 2023-12-28 | 2024-03-15 | 湖北中德焊接技术有限公司 | Railway ballast sucking vehicle |
CN117702551B (en) * | 2023-12-28 | 2024-05-31 | 湖北中德焊接技术有限公司 | Railway ballast sucking vehicle |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN215925828U (en) | A cleaning device for municipal works | |
CN208844472U (en) | A kind of centralization brush roll sanitation cart | |
CN110552307A (en) | Dust collection device for building construction and working method thereof | |
CN109750649A (en) | A kind of sundries cleaning device of garden landscape circulating water pool | |
CN212714748U (en) | Garbage collection device for road sweeper | |
CN208981250U (en) | A kind of Trailed road sweeper | |
CN108104029B (en) | A kind of road surface environmental protection clearing apparatus | |
CN211948164U (en) | Garbage cleaning device for city planning | |
CN211421000U (en) | Dust device for electric sweeper | |
CN212314594U (en) | Garbage cleaning and collecting device for constructional engineering | |
CN212529582U (en) | Water jet equipment for construction | |
CN216786975U (en) | Hand propelled sanitation machine of sweeping floor | |
CN210507248U (en) | Highway engineering maintenance is with quick cleaning device in ground | |
CN209508902U (en) | A kind of pavement cleaning | |
CN213836473U (en) | Cleaning device is used in highway construction convenient to unload | |
CN109281273B (en) | Cyclone washing and sucking device for washing and sweeping vehicle | |
CN112281730A (en) | Efficient energy-saving environment-friendly road garbage cleaning vehicle | |
CN218436819U (en) | A road descaling machine for municipal construction engineering | |
CN214363182U (en) | Street cleaning sweeper for municipal engineering | |
CN215993839U (en) | Cleaning robot for washing ground | |
CN217378726U (en) | Energy-concerving and environment-protective dust device for municipal works | |
CN215925830U (en) | High efficiency road surface processing cleaning equipment | |
CN212772149U (en) | Engineering road surface blows off cleaning device | |
CN219175111U (en) | Road cleaning device for municipal works | |
CN213389898U (en) | Road cleaning device for municipal works |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |