CN109677367B - Automobile chassis cleaning device - Google Patents
Automobile chassis cleaning device Download PDFInfo
- Publication number
- CN109677367B CN109677367B CN201910121493.7A CN201910121493A CN109677367B CN 109677367 B CN109677367 B CN 109677367B CN 201910121493 A CN201910121493 A CN 201910121493A CN 109677367 B CN109677367 B CN 109677367B
- Authority
- CN
- China
- Prior art keywords
- compression cylinder
- box
- water
- cleaning
- fixed
- 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.)
- Expired - Fee Related
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 230000006835 compression Effects 0.000 claims abstract description 46
- 238000007906 compression Methods 0.000 claims abstract description 46
- 239000007921 spray Substances 0.000 claims abstract description 15
- 238000005406 washing Methods 0.000 claims abstract description 11
- 239000012459 cleaning agent Substances 0.000 claims abstract description 10
- 239000002351 wastewater Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000003599 detergent Substances 0.000 claims description 4
- 239000013618 particulate matter Substances 0.000 claims description 2
- 238000005286 illumination Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 8
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000003570 air Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 241000220317 Rosa Species 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 2
- 239000003518 caustics Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S3/00—Vehicle cleaning apparatus not integral with vehicles
- B60S3/04—Vehicle cleaning apparatus not integral with vehicles for exteriors of land vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The invention relates to an automobile cleaning device, in particular to an automobile chassis cleaning device, which comprises a base, wherein a slide rail is arranged in the middle of the base, a cleaning box is arranged on the slide rail, a camera is arranged at the top of the cleaning box and arranged on a fixed disc, a plurality of illuminating lamps are arranged outside the camera at the upper side of the fixed disc, four spray heads are arranged outside the cleaning box, a compression cylinder is arranged in the middle of the cleaning box, a water tank is arranged at the left side of the compression cylinder, a filter box is arranged at the lower side of the water tank, a cleaning agent box is arranged at the right side of the compression cylinder, an air pump is arranged at the upper side of the cleaning agent box, water, cleaning agent and air are compressed through the compression cylinder, the compressed mixture is used for washing an automobile chassis at high pressure through the spray heads, the cleaned part is observed through the camera at the top of the cleaning box, the angle of the spray heads is adjusted in time, the automobile floor is better cleaned, and the water is filtered by the filter box, the water recycling device can be repeatedly used, improves the utilization rate of water and is more environment-friendly.
Description
Technical Field
The invention relates to the technical field of automobile cleaning, in particular to an automobile chassis cleaning device.
Background
With the continuous improvement of living standards of people, automobiles become more and more important as daily lives of people, the quantity of automobiles kept in China is rapidly increased every year, people need to regularly clean and maintain the automobiles while enjoying convenient travel brought by the automobiles, the traditional cleaning method of the automobiles mainly cleans the surfaces of the automobiles, the chassis of the automobiles is difficult to clean due to various limitations, but the chassis of the automobiles is easy to accumulate dust and other sundries in the long-time use process, once corrosive substances are accumulated on the chassis plate for a long time, the chassis is seriously damaged, hidden dangers are left for driving safety, the traditional cleaning method of the chassis of the automobiles mainly cleans the automobiles by lifting the automobiles to a certain height or spraying by using a high-pressure water gun, the former method has many potential safety hazards, and the latter method cannot completely clean the chassis of the automobiles, meanwhile, direct washing cannot be carried out on targeted washing according to the shape of the chassis, the washing effect is poor, or a large amount of clear water is needed for repeated washing, so that a better effect can be achieved, waste of a water source area is very serious, and therefore the automobile chassis washing device capable of thoroughly washing the chassis needs to be designed.
Disclosure of Invention
The invention aims to provide a vehicle chassis cleaning device to solve the problems in the background technology.
In order to solve the above problems, the present invention provides a technical solution: a cleaning device for an automobile chassis comprises a device body, wherein a base is arranged in the middle of the device body, a first moving wheel is arranged on the lower side of the base, a sliding rail is arranged in the middle of the base, a cleaning box is arranged on the sliding rail, a camera is arranged at the top of the cleaning box, the camera is arranged on a fixed disc, a plurality of illuminating lamps are arranged on the outer side of the camera on the upper side of the fixed disc, a power supply is arranged at the bottom of the camera, a wireless transmission module is arranged on the outer side of the power supply, a plurality of second fixed plates are arranged on the outer side of the cleaning box, second hinged supports are arranged at the outer ends of the second fixed plates, a spray head is hinged to the second hinged supports, a first hinged support is arranged at the outer end of the spray head, a telescopic rod is hinged to the lower side of the first hinged support, the bottom end of the telescopic rod is fixed on the first fixed plate, the outer side of the cleaning box is fixed on the first fixed plate, a third fixed plate is arranged on the lower side of the first fixed plate, a drainage groove is arranged in the middle of the upper side of the third fixed plate, the inside middle part of clean case sets up the compression cylinder, the inside piston that sets up of compression cylinder, the articulated second connecting rod in piston lower part, the articulated first connecting rod of second connecting rod lower extreme, second connecting rod one end is kept away from to first connecting rod and is fixed in the pivot, the compression cylinder inner wall of piston downside sets up button switch, compression cylinder outer wall upper portion sets up a plurality of hoses, the shower nozzle is connected to the hose outer end, set up the motorised valve on the hose, compression cylinder left side sets up the water tank, the water tank below sets up the rose box, the compression cylinder right side sets up the sanitizer case, sanitizer case upside sets up the air pump.
Preferably, fixed first water pump on the filter tank bottom plate, drainage groove is connected through the water pipe to first water pump downside, and the expansion pipe is connected to the upper end that first water pump right side set up the water pipe, fixed guide plate in the expansion pipe, and the expansion pipe below sets up the bin, and expansion pipe outer end top sets up first filter screen, sets up the second filter screen in the pipeline of first filter screen top, and second filter screen top sets up the second water pump.
Preferably, the middle part of the sliding rail is provided with a motor box, the two sides of the motor box are provided with a second movable wheel fixed through a connecting rod, the upper side of the motor box is provided with a fixed block, and the upper side of the fixed block is provided with a fixed cleaning box.
Preferably, a water pump is arranged in the water tank, the water pump pumps water from the top of the compression cylinder through a pipeline, a liquid pump is arranged in the detergent tank, detergent is pumped from the top of the compression cylinder through the pipeline by the liquid pump, air is pumped into the compression cylinder from the side edge of the compression cylinder through the pipeline by the air pump, and a hose is arranged on the lower side of the pipeline where the air enters.
Preferably, the button switch is arranged at the highest point of the first link movement.
Preferably, the illuminating lamps are uniformly arranged on the outer side of the fixed disc.
Preferably, the first moving wheel is a universal wheel.
The invention cleans a chassis by arranging a cleaning box, a water tank and a cleaning agent tank are arranged in the cleaning box to pump water and cleaning agent into a compression cylinder, an air pump pumps air into the compression cylinder, a rotating shaft is arranged below the compression cylinder to enable a piston to move up and down to compress a mixture entering the compression cylinder, the compressed mixture presses a button switch when a first connecting rod rotates to the highest point, the button switch controls an electric valve to be opened, a hose sprays the high-pressure mixture from a spray head, the spray head controls the direction of spraying the mixture to the chassis under the adjustment of the telescopic rod, the shape of the chassis is detected by a camera at the top of the cleaning box during cleaning, the angle of the spray head is adjusted in time to clean the chassis more effectively, wastewater generated during cleaning is filtered by a filter box and reused, the waste of water source is reduced, and a first moving wheel control device body moves left and right under the chassis of an automobile, the second movable wheel controls the cleaning box to move back and forth below the automobile chassis to carry out all-around cleaning on the automobile chassis.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is an enlarged view at A in FIG. 1;
FIG. 4 is an enlarged view at C of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 3;
FIG. 6 is an enlarged view at D of FIG. 5;
fig. 7 is an enlarged view of fig. 6 at E.
Reference numerals in the figures
1. A device body; 2. a base; 3. a slide rail; 4. a first moving wheel; 5. a camera; 6. an illuminating lamp; 7. fixing the disc; 8. a spray head; 9. a first hinge support; 10. a telescopic rod; 11. a first fixing sheet; 12. a hose; 13. a second hinge support; 14. a second fixing sheet; 15. a cleaning tank; 16. a wireless transmission module; 17. a power source; 18. a compression cylinder; 19. an electrically operated valve; 20. a water tank; 21. a piston; 22. a first link; 23. a motor case; 24. a second moving wheel; 25. a fixed block; 26. a rotating shaft; 27. a push button switch; 28. a second link; 29. a detergent tank; 30. an air pump; 31. a liquid collecting tank; 32. a drainage groove 33 and a third fixing piece; 35. a first water pump; 36. a filter box; 37. a first filter screen; 38. an expansion tube; 39. a second water pump; 40. a second filter screen; 41. a baffle; 42. a storage box.
Detailed Description
The invention will be described in detail with reference to the accompanying drawings, as shown in fig. 1-7, an automobile chassis cleaning device comprises a device body 1, a base 2 is arranged in the middle of the device body 1, a first moving wheel 4 is arranged on the lower side of the base 2, the first moving wheel 4 is a universal wheel, a slide rail 3 is arranged in the middle of the base 2, a motor box 23 is arranged in the middle of the slide rail 3, second moving wheels 24 are fixed on two sides of the motor box 23 through connecting rods, a fixed block 25 is arranged on the upper side of the motor box 23, a cleaning box 15 is fixed on the upper side of the fixed block 25, a cleaning box 15 is arranged on the slide rail 3, a camera 5 is arranged on the top of the cleaning box 15, the camera 5 is arranged on a fixed disk 7, six illuminating lamps 6 are arranged on the outer side of the camera 5 on the upper side of the fixed disk 7, the illuminating lamps 6 are uniformly arranged on the outer side of the fixed disk 7, a power supply 17 is arranged at the bottom of the camera 5, a wireless transmission module 16 is arranged on the outer side of the power supply 17, four second fixed plates 14 are arranged on the outer side of the cleaning box 15, 14 outer ends of second stationary blade set up second hinged-support 13, and articulated shower nozzle 8 on the second hinged-support 13, 8 outer ends of shower nozzle set up first hinged-support 9, and 9 downside hinges there is telescopic link 10 of first hinged-support, and 10 bottom mounting of telescopic link are on first stationary blade 11, and first stationary blade 11 is fixed in the 15 outsides of clean box, and 11 downside of first stationary blade set up third stationary blade 33, and third stationary blade 33 upside middle part sets up drainage groove 32, and third stationary blade 33 upside sets up collecting tank 31.
The middle part of the inner side of the cleaning box 15 is provided with a compression cylinder 18, the compression cylinder 18 is internally provided with a piston 21, the lower part of the piston 21 is hinged with a second connecting rod 28, the lower end of the second connecting rod 28 is hinged with a first connecting rod 22, one end of the first connecting rod 22, which is far away from the second connecting rod 28, is fixed on a rotating shaft 26, the inner wall of the compression cylinder 18, which is far away from the piston 21, is provided with a button switch 27, the button switch 27 is arranged at the highest point of the movement of the first connecting rod 22, the upper part of the outer wall of the compression cylinder 18 is provided with four hoses 12, the outer ends of the hoses 12 are connected with a spray head 8, the hoses 12 are provided with an electric valve 19, the left side of the compression cylinder 18 is provided with a water tank 20, the lower part of the water tank 20 is provided with a filter box 36, the bottom plate of the filter box 36 is fixed with a first water pump 35, the water inlet at the lower side of the first water pump 35 is connected with a drainage groove 32 through a water pipe, the water outlet at the right side of the first water pump 35 is connected with an expansion pipe 38 through a water pipe, a guide plate 41 is fixed in the expansion pipe 38, and a storage box 42 is arranged below the expansion pipe 38, the expansion pipe 38 outer end top sets up first filter screen 37, sets up second filter screen 40 in the pipeline of first filter screen 37 top, and second filter screen 40 top sets up second water pump 39, and compression cylinder 18 right side sets up sanitizer case 29, and sanitizer case 29 upside sets up air pump 30, set up the water pump in the water tank 20, the water pump passes through the pipeline with water from compression cylinder 18 top suction, set up the liquid pump in the sanitizer case 29, the liquid pump passes through the pipeline with the sanitizer and from compression cylinder 18 top suction, air pump 30 passes through the pipeline with the air from compression cylinder 18 side suction compression cylinder 18, and air admission's pipeline downside sets up hose 12.
The device body 1 is moved to the lower part of an automobile through the first moving wheel 4, the cleaning box 15 is moved to one end of the sliding rail 3 through the second moving wheel 24, when cleaning is started, the height of the telescopic rod 10 is adjusted, the spray head 8 and the chassis of the automobile keep a proper angle, the rotating shaft 26 enables the first connecting rod 22 to rotate around the rotating shaft 26 under the driving of the motor, the first connecting rod 22 drives the piston 21 hinged on the second connecting rod 28 to move downwards, the water pump in the water tank 20 pumps water into the compression cylinder 18 from the upper part of the compression cylinder 18 through a pipeline, the liquid pump in the cleaning agent box 29 pumps cleaning agent into the compression cylinder 18 from the upper part of the compression cylinder 18 through a pipeline, the air pump 30 blows air into the compression cylinder 18 through a pipeline, one-way valves are arranged in the pipeline above the compression cylinder 18 and the pipeline connected with the air pump 30 and the compression cylinder 18, the rotating shaft 26 rotates to enable the piston 21 to move upwards, the piston 21 compresses the mixture, when the hinged part of the first connecting rod 22 and the second connecting rod 28 moves to the highest point, pressing button switch 27, button switch 27 makes motorised valve 19 open, the mixture after the pressurization gets into shower nozzle 8 through hose 12, telescopic link 10 adjustment height makes shower nozzle 8 use second hinged-support 13 to rotate as the fulcrum, observe the chassis through camera 5 of clean case 15 top, when the chassis warp, in time adjust the angle of shower nozzle 8 blowout water and cleaning solution mixture, wash better, faster to the chassis, waste water after the washing gets into the catch basin 31, set up drainage tank 32 below the catch basin 31, waste water in drainage tank 32 gets into rose box 36 through the pipeline, first water pump 35 in rose box 36 pumps waste water to expansion pipe 38, the upper side of guide plate 41 in expansion pipe 38 is bigger than the downside radian, waste water forms the whirlpool of making progress after flowing through guide plate 41, bigger particulate matter gets into bin 42, waste water continues to flow upwards, the first filter screen 37 filters the wastewater for the first time, the particles fall into the storage tank 42 downwards, the wastewater passes through the first filter screen 37 and then is filtered again at the second filter screen 40, the wastewater after being filtered again enters the water tank 20 through the second water pump 39 for recycling, the waste of water sources is reduced, the illuminating lamp 7 illuminates the chassis, so that the camera 5 can observe the cleaning effect of the chassis more clearly, the automobile chassis is cleaned in all directions through the movement of the second movable wheel 24 in the slide rail 3 and the first movable wheel 4, no additional pressurizing equipment is needed, the high-pressure cleaning of the automobile chassis can be realized, the water tank 20 and the cleaning agent tank 29 are arranged in the device body 1, the condition that the cleaning is influenced by an external connecting water pipe can not be generated, the cleaning effect of the chassis is checked through the camera 5, and the cleaning is carried out for many times on places which are not cleaned cleanly.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (4)
1. A cleaning device for an automobile chassis comprises a device body and is characterized in that a base is arranged in the middle of the device body, a first moving wheel is arranged on the lower side of the base, a sliding rail is arranged in the middle of the base, a motor box is arranged in the middle of the sliding rail, second moving wheels are fixed on two sides of the motor box through connecting rods, a fixing block is arranged on the upper side of the motor box, a cleaning box is fixed on the upper side of the fixing block, a camera is arranged at the top of the cleaning box and arranged on a fixing disc, a plurality of illuminating lamps are arranged on the outer side of the camera on the upper side of the fixing disc, a power source is arranged at the bottom of the camera, a wireless transmission module is arranged on the outer side of the power source, a plurality of second fixing sheets are arranged on the outer side of the cleaning box, a second hinged support is arranged at the outer end of each second fixing sheet, a spray head is hinged to the outer end of the spray head, a telescopic rod is hinged to the lower side of the first hinged support, the bottom end of the telescopic rod is fixed on the first fixing sheet, and fixed to the outer side of the cleaning box, the lower side of the first fixing plate is provided with a third fixing plate, the middle part of the upper side of the third fixing plate is provided with a drainage groove, the upper side of the third fixing plate is provided with a liquid collecting groove, the middle part of the inner side of the cleaning box is provided with a compression cylinder, a piston is arranged in the compression cylinder, the lower part of the piston is hinged with a second connecting rod, the lower end of the second connecting rod is hinged with a first connecting rod, one end, away from the second connecting rod, of the first connecting rod is fixed on the rotating shaft, the inner wall of the compression cylinder on the lower side of the piston is provided with a button switch, and the button switch is arranged at the highest point of the movement of the first connecting rod; the upper part of the outer wall of the compression cylinder is provided with a plurality of hoses, the outer ends of the hoses are connected with a spray head, the hoses are provided with electric valves, the left side of the compression cylinder is provided with a water tank, a filter box is arranged below the water tank, the right side of the compression cylinder is provided with a cleaning agent box, and the upper side of the cleaning agent box is provided with an air pump;
a first water pump is fixed on the bottom plate of the filter tank, the lower side of the first water pump is connected with the drainage groove through a water pipe, the upper end of the water pipe arranged on the right side of the first water pump is connected with an expansion pipe, a guide plate is fixed in the expansion pipe, a storage tank is arranged below the expansion pipe, a first filter screen is arranged above the outer end of the expansion pipe, a second filter screen is arranged in a pipeline above the first filter screen, and a second water pump is arranged above the second filter screen; the guide plate in the expansion pipe is upward big than the downside radian in side, and waste water forms the whirlpool of upwards rotation after flowing through the guide plate, and great particulate matter gets into the bin, and waste water continues the upflow.
2. The vehicle chassis washing apparatus of claim 1, wherein a water pump is provided in the tank to pump water through a conduit from the top of the compression cylinder, a liquid pump is provided in the tank to pump detergent through a conduit from the top of the compression cylinder, the air pump pumps air through a conduit from the side of the compression cylinder into the compression cylinder, and a hose is provided under the conduit into which the air enters.
3. The vehicle chassis washing device as claimed in claim 1, wherein the illumination lamps are uniformly arranged outside the fixed tray.
4. The vehicle chassis washing apparatus of claim 1, wherein the first movable wheel is a universal wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910121493.7A CN109677367B (en) | 2019-02-19 | 2019-02-19 | Automobile chassis cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910121493.7A CN109677367B (en) | 2019-02-19 | 2019-02-19 | Automobile chassis cleaning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109677367A CN109677367A (en) | 2019-04-26 |
| CN109677367B true CN109677367B (en) | 2022-06-21 |
Family
ID=66196460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910121493.7A Expired - Fee Related CN109677367B (en) | 2019-02-19 | 2019-02-19 | Automobile chassis cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109677367B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019119811A1 (en) * | 2019-07-23 | 2021-01-28 | Alfred Kärcher SE & Co. KG | Vehicle wash |
| CN110406502B (en) * | 2019-07-24 | 2021-03-19 | 安徽友邦矿业有限公司 | Car washing platform for mine field |
| CN112141052B (en) * | 2020-08-24 | 2022-05-10 | 南京灵雀智能制造有限公司 | Cleaning device for automobile chassis |
| CN113266187B (en) * | 2021-03-31 | 2023-05-12 | 安徽鸿杰威尔停车设备有限公司 | PCS type garage with AGV type transition carrying mechanism for car carrying plate |
| CN115583220A (en) * | 2022-09-09 | 2023-01-10 | 大连工业大学 | Automobile chassis cleaning robot and cleaning method thereof |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201073962Y (en) * | 2007-06-08 | 2008-06-18 | 陈守忠 | Automatic cleaning machine for automobile chassis |
| CN102219012B (en) * | 2011-04-28 | 2012-10-10 | 黄永 | Dual-purpose device for vehicle cleaning and air inflation |
| KR20140128600A (en) * | 2013-04-29 | 2014-11-06 | 심원보 | Device for washing underbody of vehicle |
| CN203496853U (en) * | 2013-10-17 | 2014-03-26 | 王聚涛 | Automobile air conditioner cleaning system |
| CN104525526A (en) * | 2014-12-29 | 2015-04-22 | 韩永存 | Dry ice washer and application method thereof |
| CN106563658A (en) * | 2015-10-09 | 2017-04-19 | 苏州宝时得电动工具有限公司 | Automatic washing device |
| CN106585573B (en) * | 2017-01-04 | 2020-11-24 | 上海蔚来汽车有限公司 | Electric automobile chassis cleaning device and cleaning method |
| CN106945648A (en) * | 2017-04-01 | 2017-07-14 | 杨光明 | Cleaning vehicle suitable for automobile washing |
| CN208248165U (en) * | 2018-04-21 | 2018-12-18 | 辽宁机电职业技术学院 | A kind of mobile automobile chassis cleaning device |
| CN208360138U (en) * | 2018-07-02 | 2019-01-11 | 江西现代职业技术学院 | A kind of washing automobile chassis device |
-
2019
- 2019-02-19 CN CN201910121493.7A patent/CN109677367B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN109677367A (en) | 2019-04-26 |
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Effective date of registration: 20221221 Address after: 704, Floor 7, Building 1, Zhenghang Science Park, No. 7, South University Road, Changjiang Road Street, Erqi District, Zhengzhou City, Henan Province, 450,000 Patentee after: Zhengzhou Liansui Intelligent Technology Co.,Ltd. Address before: No.94 hanghai Middle Road, Erqi District, Zhengzhou City, Henan Province Patentee before: HUANGHE S & T College |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220621 |